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r3175 Friday 5th September, 2008 at 12:39:46 UTC by Fabio Priuli
[C16/C64/C128/VIC20] Added full .tap support
[C16] Merged memory maps, more work on memory will be needed
[docs]messnew.txt
[src/mess/drivers]c16.c
[src/mess/formats]cbm_tap.c* cbm_tap.h*
[src/mess/machine]c64.c cbm.c

src/mess/machine/cbm.c
r3174r3175
66#include "devices/cassette.h"
77
88#include "includes/cbm.h"
9#include "formats/cbm_tap.h"
910
1011
1112
r3174r3175
197198   case MESS_DEVINFO_INT_COUNT:               info->i = 1; break;
198199
199200   case MESS_DEVINFO_INT_CASSETTE_DEFAULT_STATE:   info->i = CASSETTE_STOPPED | CASSETTE_MOTOR_DISABLED | CASSETTE_SPEAKER_ENABLED; break;
201   case MESS_DEVINFO_PTR_CASSETTE_FORMATS:         info->p = (void *)cbm_cassette_formats; break;
200202
201203   default:                              cassette_device_getinfo(devclass, state, info); break;
202204   }
src/mess/machine/c64.c
r3174r3175
1313 */
1414
1515/*
16   2008-08-31: Tape status [FP & RZ]
16   2008-09-05: Tape status [FP & RZ]
1717   - tape loading works
18   - tap files are supported
1819   
1920   TODO:
2021   * write to tape
21   * support for .tap files
2222*/
2323
2424#include "driver.h"
src/mess/formats/cbm_tap.c
r0r3175
1/*
2   
3   Tape support for C16 / C64 / VIC20 TAP format
4
5
6   Credits to:
7   
8      - Peter Schepers for the informations on C64 formats
9      - Vice Team for the source of their very complete emulator
10      - Attila G. for tap2wav (both the source and the actual tool)
11
12   
13   TODO:
14   * to verify and fix (if needed) support for .TAP v2
15   * to implement reading (and logging) the remaining part of the header
16   * to verify if it is more accurate to use a different HIGH_WAVE value
17     when the pulse corresponds to a 0x00 in the .TAP file
18   (...)
19   * (far away in the future) can this code be merged with TZX code?
20
21*/
22
23/* Info based on http://ist.uwaterloo.ca/~schepers/formats/TAP.TXT       */
24/* Please refer to the webpage for the latest version and for a very
25   complete listing of various cart types and their bankswitch tricks    */
26/*
27
28  Designed by Per Hakan Sundell (author of the CCS64 C64 emulator) in 1997,
29this format attempts to duplicate the data stored on a C64  cassette  tape,
30bit for bit. Since it is simply a representation of  the  raw  serial  data
31from a tape, it should handle *any* custom tape loaders that exist.
32
33  The TAP images are generally very large, being a minimum of eight  times,
34and up to sixteen times as large as what a raw PRG file would be.  This  is
35due to the way the data is stored, with each bit of the original  file  now
36being one byte large in the TAP file. The layout is fairly simple,  with  a
37small 14-byte header followed by file data.
38
39    Bytes: $0000-000B: File signature "C64-TAPE-RAW"
40                 000C: TAP version (see below for description)
41                        $00 - Original layout
42                         01 - Updated
43            000D-000F: Future expansion
44            0010-0013: File  data  size  (not  including  this  header,  in
45                       LOW/HIGH format).
46            0014-xxxx: File data
47
48  In TAP version $00 files, each data byte in the file data area represents
49the length of a pulse, when the C64's hardware  will  trigger  again.  This
50pulse length is determined by the following formula:
51
52    pulse length (in seconds) = (8 * data byte) / (clock cycles)
53
54  Therefore, a data value of $2F (47 in decimal) would be:
55
56    (47 * 8) / 985248 = .00038975 seconds.
57
58  A data value of $00 represents an "overflow" condition, any pulse  length
59which is more that 255 * 8 in length.
60
61  The value of "clock cylces" from above  (985248)  is  based  on  the  PAL
62value.  Since  this  file  format  was  developed  in  Europe,   which   is
63predominantly PAL video, this is only logical.  The  NTSC  value  would  be
641022730, which is very close to  the  PAL,  and  therefore  won't  cause  a
65compatability problem converting European and NTSC tapes. I would stick  to
66using the PAL value just in case.
67
68
69  In TAP version $01 files, the data value of  $00  has  been  re-coded  to
70represent values greater than 255 * 8. When a  $00  is  encountered,  three
71bytes will follow which are the actual time (in cycles) of a pulse, and the
72above formula does not apply.  The  three  bytes  are  stored  in  LOW/HIGH
73format.
74
75
76  The actual interpretation of the serial data takes a little more work  to
77explain.  The  typical  ROM  tape  loader  (and  the  turbo  loaders)  will
78initialize a timer with a specified value and start it  counting  down.  If
79either the tape data changes or the timer runs out, an IRQ will occur.  The
80loader will determine which condition caused the  IRQ.  If  the  tape  data
81changed before the timer ran out, we have a short pulse, or a "0"  bit.  If
82the timer ran out first, we have a long pulse, or a  "1"  bit.  Doing  this
83continuously and we decode the entire file.
84
85
86[ Additional notes on v.2:
87
88  I found no documents about this around, but it seems an expansion of the
89format specifically thought for C16 tapes. In a .TAP version 2, each byte
90only stores informations on half of the wave...
91Unfortunately, I have no such a .tap file to test, so my implementation
92below could be not working.  FP ]
93*/
94
95#include "driver.h"
96#include "formats/cbm_tap.h"
97
98
99#define CBM_WAV_FREQUENCY   44100
100
101/* Systems */
102#define C64      0
103#define VIC20   1
104#define C16      2
105
106/* Video standards */
107#define PAL      0
108#define NTSC   1
109
110/* Frequencies in [Hz] to determine the length of each pulse */
111#define C64_PAL      123156      /*  985248 / 8 */
112#define C64_NTSC   127841      /* 1022727 / 8 */
113#define VIC20_PAL   138551      /* 1108405 / 8 */
114#define VIC20_NTSC   127841      /* 1022727 / 8 */
115#define C16_PAL      110840      /*  886724 / 8 */
116#define C16_NTSC   111860      /*  894886 / 8 */
117
118#define PAUSE (CBM_WAV_FREQUENCY / 50)      /* tap2wav uses this value for 0x00 in .TAP v0, instead of 0x100 */
119
120/* These values do not really matter, as long as the produced pulses
121  go above & below 0. However, for documentation purpose it would be
122  nice to find out which values were used by Commodore tapes. I was
123  not able to find any reference on the subject. */
124#define WAVE_HIGH      (0x5a9e >> 1)
125#define WAVE_LOW      -(0x5a9e >> 1)
126#define WAVE_PAUSE      0x80
127
128#define CBM_HEADER_SIZE 20
129
130static INT16   wave_data = 0;
131static int     len;
132
133
134/* This in fact gives the number of samples for half of the pulse */
135INLINE int tap_data_to_samplecount(int data, int frequency)
136{
137//   return (int) (0.5 * (0.5 + (((double)CBM_WAV_FREQUENCY / frequency) * (double)data)));      // MESS TZX formula
138   return (int) (0.5 * (((double)CBM_WAV_FREQUENCY / frequency) * (double)((data) + 0.5)));   // tap2wav formula
139}
140
141/* The version with parameters could be handy if we decide to implement a
142different values for byte == 0x00 below (the WAVE_PAUSE) as tap2wav does. */
143#if 0
144static void toggle_wave_data(int low, int high)
145{
146   wave_data = (wave_data == low) ? high : low;
147}
148#endif
149
150static void toggle_wave_data(void )
151{
152   wave_data = (wave_data == WAVE_HIGH) ? WAVE_LOW : WAVE_HIGH;
153}
154
155static void cbm_output_wave( INT16 **buffer, int length )
156{
157   if (buffer == NULL)
158      return;
159   
160   for( ; length > 0; length-- )
161   {
162      **buffer = wave_data;
163      *buffer = *buffer + 1;
164   }
165}
166
167
168static int cbm_tap_do_work( INT16 **buffer, int length, const UINT8 *data )
169{
170   int i, j = 0;
171   int size = 0;
172
173   int version = data[0x0c];
174   int system = data[0x0d];
175   int video_standard = data[0x0e];
176   int tap_frequency = 0;
177
178   int byte_samples = 0;
179   UINT8 over_pulse_bytes[3] = {0 , 0, 0 };
180   int over_pulse_length = 0;
181   /* These waveamp_* values are currently stored but not used.
182     Further investigations are needed to find real pulse amplitude
183     in Commodore tapes. Implementation here would follow */
184   int waveamp_high, waveamp_low;
185
186   /* Log .TAP info but only once */
187   if (!(buffer == NULL))
188   {
189      logerror("TAP version    : %d\n", version);
190      logerror("Machine type   : %d\n", system);
191      logerror("Video standard : %d\n", video_standard);   
192      logerror("Tape frequency : %d\n", (tap_frequency) << 3);
193   }
194
195
196   /* is this a supported version? */
197   if ((version < 0) || (version > 2))
198   {
199      logerror("Unsupported .tap version: %d \n", version);
200      return -1;
201   }
202
203   /* is the .tap file corrupted? */
204   if ((data == NULL) || (length <= CBM_HEADER_SIZE))
205      return -1;
206
207
208   /* read the frequency from the .tap header */
209    switch (system)
210    {
211        case VIC20:
212            tap_frequency = (video_standard == NTSC) ? VIC20_NTSC : VIC20_PAL;
213            break;
214
215        case C16:
216            tap_frequency = (video_standard == NTSC) ? C16_NTSC : C16_PAL;
217            break;
218
219        case C64:
220        default:
221            tap_frequency = (video_standard == NTSC) ? C64_NTSC : C64_PAL;
222            break;
223    }
224
225
226   for (i = CBM_HEADER_SIZE; i < length; i++)
227   {
228      UINT8 byte = data[i];
229
230      /* .TAP v0 */
231      /* Here is simple:
232        if byte is != 0 -> length = byte
233        otherwise -> length =  0x100 (i.e. 0xff + 1) */
234      if (!version)
235      {
236         if (byte != 0x00)
237         {
238            byte_samples = tap_data_to_samplecount(byte, tap_frequency);
239            waveamp_high = WAVE_HIGH;
240         }
241         else
242         {
243            byte_samples = tap_data_to_samplecount(PAUSE, tap_frequency);   // tap2wav value
244//            byte_samples = tap_data_to_samplecount(0x100, tap_frequency);   // vice value         
245            waveamp_high = WAVE_PAUSE;           
246         }
247         waveamp_low = WAVE_LOW;
248      }
249
250      /* .TAP v1 & v2 */
251      /* Here is a bit more complicate:
252        if byte is != 0 -> length = byte
253        otherwise -> the length of the pulse is stored as a 24bit value in the 3 bytes after the 0.
254        See below for comments on the implementation of this mechanism */
255      if (version)
256      {
257         if ((byte != 0x00) && !j)
258         {
259            byte_samples = tap_data_to_samplecount(byte, tap_frequency);
260            waveamp_high = WAVE_HIGH;
261         }
262         else
263         {
264            /* If we have a long pulse close to the end of the .TAP, check that bytes still
265              to be read are enough to complete it. */
266            if (length - i + j >= 4)
267            {   
268               /* Here we read the 3 following bytes, using an index j
269                 j = 0 -> The 0x00 byte: we simply skip everything and go on
270                 j = 1,2 -> The 1st and 2nd bytes after 0x00: we store them and go on
271                 j = 3 -> The final byte of the pulse length: we store it,
272                 and then we pass to finally output the wave */
273               if (j > 0)
274               {
275                  over_pulse_bytes[j-1] = byte;
276                  j += 1;
277
278                  if (j >= 4)
279                  {
280                     over_pulse_length = ((over_pulse_bytes[2] << 16) | (over_pulse_bytes[1] << 8) | over_pulse_bytes[0]) >> 3;
281                     byte_samples = tap_data_to_samplecount(over_pulse_length, tap_frequency);
282                     waveamp_high = WAVE_PAUSE;
283                     j = 0;
284                  }
285               }
286               else
287               {
288                  j += 1;
289                  logerror("Found a 00 byte close to the end of the .tap file.\n");
290                  logerror("This is not allowed by the format specs. \n");
291                  logerror("Check if your .tap file got corrupted when you created it!\n");
292               }
293            }
294            else j = 1;
295         }
296         waveamp_low = WAVE_LOW;
297      }
298
299      if (j == 0)
300      {
301         cbm_output_wave( buffer, byte_samples );
302         size += byte_samples;
303//         toggle_wave_data(waveamp_low, waveamp_high);
304         toggle_wave_data();
305         if (version < 2)
306         {
307            cbm_output_wave( buffer, byte_samples );
308            size += byte_samples;
309//            toggle_wave_data(waveamp_low, waveamp_high);
310            toggle_wave_data();
311         }
312      }
313   }
314
315   return size;
316}
317
318
319static int cbm_tap_to_wav_size( const UINT8 *tapdata, int taplen )
320{
321   int size = cbm_tap_do_work(NULL, taplen, tapdata);
322   len = taplen;
323   
324   return size;
325}
326
327static int cbm_tap_fill_wave( INT16 *buffer, int length, UINT8 *bytes )
328{   
329   INT16 *p = buffer;
330
331   return cbm_tap_do_work(&p, len, (const UINT8 *)bytes);
332}
333
334
335
336
337static const struct CassetteLegacyWaveFiller cbm_legacy_fill_wave = {
338   cbm_tap_fill_wave,      /* fill_wave */
339   -1,                  /* chunk_size */
340   0,                  /* chunk_samples */
341   cbm_tap_to_wav_size,   /* chunk_sample_calc */
342   CBM_WAV_FREQUENCY,      /* sample_frequency */
343   0,                  /* header_samples */
344   0                  /* trailer_samples */
345};
346
347
348static casserr_t cbm_cassette_identify( cassette_image *cassette, struct CassetteOptions *opts )
349{
350   return cassette_legacy_identify( cassette, opts, &cbm_legacy_fill_wave );
351}
352
353
354static casserr_t cbm_cassette_load( cassette_image *cassette )
355{
356   return cassette_legacy_construct( cassette, &cbm_legacy_fill_wave );
357}
358
359
360static const struct CassetteFormat cbm_tap_cassette_format = {
361   "tap",
362   cbm_cassette_identify,
363   cbm_cassette_load,
364   NULL
365};
366
367
368CASSETTE_FORMATLIST_START(cbm_cassette_formats)
369   CASSETTE_FORMAT(cbm_tap_cassette_format)
370CASSETTE_FORMATLIST_END
src/mess/formats/cbm_tap.h
r0r3175
1/*********************************************************************
2
3   cbm_tap.h
4
5   Format code for CBM .tap files
6
7*********************************************************************/
8
9#ifndef CBM_TAP_H
10#define CBM_TAP_H
11
12#include "formats/cassimg.h"
13
14CASSETTE_FORMATLIST_EXTERN(cbm_cassette_formats);
15
16#endif /*  CBM_TAP_H */
src/mess/drivers/c16.c
r3174r3175
199199 * at 0xfc00 till 0xfcff is ram or rom kernal readable
200200 */
201201
202static ADDRESS_MAP_START( c16_readmem , ADDRESS_SPACE_PROGRAM, 8)
203   AM_RANGE(0x0000, 0x3fff) AM_READ( SMH_BANK9)
204   AM_RANGE(0x4000, 0x7fff) AM_READ( SMH_BANK1)      /* only ram memory configuration */
205   AM_RANGE(0x8000, 0xbfff) AM_READ( SMH_BANK2)
206   AM_RANGE(0xc000, 0xfbff) AM_READ( SMH_BANK3)
207   AM_RANGE(0xfc00, 0xfcff) AM_READ( SMH_BANK4)
208   AM_RANGE(0xfd10, 0xfd1f) AM_READ( c16_fd1x_r)
209   AM_RANGE(0xfd30, 0xfd3f) AM_READ( c16_6529_port_r) /* 6529 keyboard matrix */
202static ADDRESS_MAP_START(c16_map, ADDRESS_SPACE_PROGRAM, 8)
203   AM_RANGE(0x0000, 0x3fff) AM_RAMBANK(9)
204   AM_RANGE(0x4000, 0x7fff) AM_READWRITE(SMH_BANK1, SMH_BANK5)      /* only ram memory configuration */
205   AM_RANGE(0x8000, 0xbfff) AM_READWRITE(SMH_BANK2, SMH_BANK6)
206   AM_RANGE(0xc000, 0xfbff) AM_READ(SMH_BANK3)
207   AM_RANGE(0xfc00, 0xfcff) AM_READ(SMH_BANK4)
208   AM_RANGE(0xc000, 0xfcff) AM_WRITE(SMH_BANK7)
209   AM_RANGE(0xfd10, 0xfd1f) AM_READ(c16_fd1x_r)
210   AM_RANGE(0xfd30, 0xfd3f) AM_READWRITE(c16_6529_port_r, c16_6529_port_w)      /* 6529 keyboard matrix */
211   AM_RANGE(0xfdd0, 0xfddf) AM_WRITE(c16_select_roms) /* rom chips selection */
212   AM_RANGE(0xff00, 0xff1f) AM_READWRITE(ted7360_port_r, ted7360_port_w)
213   AM_RANGE(0xff20, 0xffff) AM_READ(SMH_BANK8)
214   AM_RANGE(0xff3e, 0xff3e) AM_WRITE(c16_switch_to_rom)
215   AM_RANGE(0xff3f, 0xff3f) AM_WRITE(c16_switch_to_ram)
210216#if 0
211   AM_RANGE( 0xfd40, 0xfd5f) AM_READ( sid6581_0_port_r ) /* sidcard, eoroidpro ... */
212   AM_RANGE(0xfec0, 0xfedf) AM_READ( c16_iec9_port_r) /* configured in c16_common_init */
213   AM_RANGE(0xfee0, 0xfeff) AM_READ( c16_iec8_port_r) /* configured in c16_common_init */
214#endif
215   AM_RANGE(0xff00, 0xff1f) AM_READ( ted7360_port_r)
216   AM_RANGE(0xff20, 0xffff) AM_READ( SMH_BANK8)
217/*  { 0x10000, 0x3ffff, SMH_ROM }, */
218ADDRESS_MAP_END
219
220static ADDRESS_MAP_START( c16_writemem , ADDRESS_SPACE_PROGRAM, 8)
221   AM_RANGE(0x0000, 0x3fff) AM_WRITE( SMH_BANK9)
222   AM_RANGE(0x4000, 0x7fff) AM_WRITE( SMH_BANK5)
223   AM_RANGE(0x8000, 0xbfff) AM_WRITE( SMH_BANK6)
224   AM_RANGE(0xc000, 0xfcff) AM_WRITE( SMH_BANK7)
225#if 0
226217   AM_RANGE(0x4000, 0x7fff) AM_WRITE( c16_write_4000)  /*configured in c16_common_init */
227218   AM_RANGE(0x8000, 0xbfff) AM_WRITE( c16_write_8000)  /*configured in c16_common_init */
228219   AM_RANGE(0xc000, 0xfcff) AM_WRITE( c16_write_c000)  /*configured in c16_common_init */
229#endif
230   AM_RANGE(0xfd30, 0xfd3f) AM_WRITE( c16_6529_port_w) /* 6529 keyboard matrix */
231#if 0
232   AM_RANGE(0xfd40, 0xfd5f) AM_WRITE( sid6581_0_port_w)
233#endif
234   AM_RANGE(0xfdd0, 0xfddf) AM_WRITE( c16_select_roms) /* rom chips selection */
235#if 0
236   AM_RANGE(0xfec0, 0xfedf) AM_WRITE( c16_iec9_port_w) /*configured in c16_common_init */
237   AM_RANGE(0xfee0, 0xfeff) AM_WRITE( c16_iec8_port_w) /*configured in c16_common_init */
238#endif
239   AM_RANGE(0xff00, 0xff1f) AM_WRITE( ted7360_port_w)
240#if 0
220   AM_RANGE(0xfd40, 0xfd5f) AM_READWRITE(sid6581_0_port_r, sid6581_0_port_w)   /* sidcard, eoroidpro ... */
221   AM_RANGE(0xfec0, 0xfedf) AM_READWRITE(c16_iec9_port_r, c16_iec9_port_w)      /*configured in c16_common_init */
222   AM_RANGE(0xfee0, 0xfeff) AM_READWRITE(c16_iec8_port_r, c16_iec8_port_w)      /*configured in c16_common_init */
241223   AM_RANGE(0xff20, 0xff3d) AM_WRITE( c16_write_ff20)  /*configure in c16_common_init */
242#endif
243   AM_RANGE(0xff3e, 0xff3e) AM_WRITE( c16_switch_to_rom)
244   AM_RANGE(0xff3f, 0xff3f) AM_WRITE( c16_switch_to_ram)
245#if 0
246224   AM_RANGE(0xff40, 0xffff) AM_WRITE( c16_write_ff40)  /*configure in c16_common_init */
247//  {0x10000, 0x3ffff, SMH_ROM},
248225#endif
249226ADDRESS_MAP_END
250227
251static ADDRESS_MAP_START( plus4_readmem , ADDRESS_SPACE_PROGRAM, 8)
252   AM_RANGE(0x0000, 0x7fff) AM_READ( SMH_BANK9)
253   AM_RANGE(0x8000, 0xbfff) AM_READ( SMH_BANK2)
254   AM_RANGE(0xc000, 0xfbff) AM_READ( SMH_BANK3)
255   AM_RANGE(0xfc00, 0xfcff) AM_READ( SMH_BANK4)
256   AM_RANGE(0xfd00, 0xfd0f) AM_READ( c16_6551_port_r)
257   AM_RANGE(0xfd10, 0xfd1f) AM_READ( plus4_6529_port_r)
258   AM_RANGE(0xfd30, 0xfd3f) AM_READ( c16_6529_port_r) /* 6529 keyboard matrix */
259#if 0
260   AM_RANGE( 0xfd40, 0xfd5f) AM_READ( sid6581_0_port_r ) /* sidcard, eoroidpro ... */
261   AM_RANGE(0xfec0, 0xfedf) AM_READ( c16_iec9_port_r) /* configured in c16_common_init */
262   AM_RANGE(0xfee0, 0xfeff) AM_READ( c16_iec8_port_r) /* configured in c16_common_init */
263#endif
264   AM_RANGE(0xff00, 0xff1f) AM_READ( ted7360_port_r)
265   AM_RANGE(0xff20, 0xffff) AM_READ( SMH_BANK8)
266/*  { 0x10000, 0x3ffff, SMH_ROM }, */
267ADDRESS_MAP_END
268
269static ADDRESS_MAP_START( plus4_writemem , ADDRESS_SPACE_PROGRAM, 8)
270   AM_RANGE(0x0000, 0xfcff) AM_WRITE( SMH_BANK9)
271   AM_RANGE(0xfd00, 0xfd0f) AM_WRITE( c16_6551_port_w)
272   AM_RANGE(0xfd10, 0xfd1f) AM_WRITE( plus4_6529_port_w)
273   AM_RANGE(0xfd30, 0xfd3f) AM_WRITE( c16_6529_port_w) /* 6529 keyboard matrix */
274#if 0
275   AM_RANGE(0xfd40, 0xfd5f) AM_WRITE( sid6581_0_port_w)
276#endif
228static ADDRESS_MAP_START(plus4_map, ADDRESS_SPACE_PROGRAM, 8)
229   AM_RANGE(0x0000, 0x7fff) AM_READ(SMH_BANK9)
230   AM_RANGE(0x8000, 0xbfff) AM_READ(SMH_BANK2)
231   AM_RANGE(0xc000, 0xfbff) AM_READ(SMH_BANK3)
232   AM_RANGE(0xfc00, 0xfcff) AM_READ(SMH_BANK4)
233   AM_RANGE(0x0000, 0xfcff) AM_WRITE(SMH_BANK9)
234   AM_RANGE(0xfd00, 0xfd0f) AM_READWRITE(c16_6551_port_r, c16_6551_port_w)
235   AM_RANGE(0xfd10, 0xfd1f) AM_READWRITE(plus4_6529_port_r, plus4_6529_port_w)
236   AM_RANGE(0xfd30, 0xfd3f) AM_READWRITE(c16_6529_port_r, c16_6529_port_w) /* 6529 keyboard matrix */
277237   AM_RANGE(0xfdd0, 0xfddf) AM_WRITE( c16_select_roms) /* rom chips selection */
278238#if 0
279   AM_RANGE(0xfec0, 0xfedf) AM_WRITE( c16_iec9_port_w) /*configured in c16_common_init */
280   AM_RANGE(0xfee0, 0xfeff) AM_WRITE( c16_iec8_port_w) /*configured in c16_common_init */
239   AM_RANGE(0xfd40, 0xfd5f) AM_READWRITE(sid6581_0_port_r, sid6581_0_port_w)   /* sidcard, eoroidpro ... */
240   AM_RANGE(0xfec0, 0xfedf) AM_READWRITE(c16_iec9_port_r, c16_iec9_port_w)      /*configured in c16_common_init */
241   AM_RANGE(0xfee0, 0xfeff) AM_READWRITE(c16_iec8_port_r, c16_iec8_port_w)      /*configured in c16_common_init */
281242#endif
282   AM_RANGE(0xff00, 0xff1f) AM_WRITE( ted7360_port_w)
283   AM_RANGE(0xff20, 0xff3d) AM_WRITE( SMH_RAM)
284   AM_RANGE(0xff3e, 0xff3e) AM_WRITE( c16_switch_to_rom)
285   AM_RANGE(0xff3f, 0xff3f) AM_WRITE( c16_switch_to_ram)
286   AM_RANGE(0xff40, 0xffff) AM_WRITE( SMH_RAM)
287//  {0x10000, 0x3ffff, SMH_ROM},
243   AM_RANGE(0xff00, 0xff1f) AM_READWRITE(ted7360_port_r, ted7360_port_w)
244   AM_RANGE(0xff20, 0xffff) AM_READ(SMH_BANK8)
245   AM_RANGE(0xff20, 0xff3d) AM_WRITE(SMH_RAM)
246   AM_RANGE(0xff3e, 0xff3e) AM_WRITE(c16_switch_to_rom)
247   AM_RANGE(0xff3f, 0xff3f) AM_WRITE(c16_switch_to_ram)
248   AM_RANGE(0xff40, 0xffff) AM_WRITE(SMH_RAM)
288249ADDRESS_MAP_END
289250
290static ADDRESS_MAP_START( c364_readmem , ADDRESS_SPACE_PROGRAM, 8)
291   AM_RANGE(0x0000, 0x7fff) AM_READ( SMH_BANK9)
292   AM_RANGE(0x8000, 0xbfff) AM_READ( SMH_BANK2)
293   AM_RANGE(0xc000, 0xfbff) AM_READ( SMH_BANK3)
294   AM_RANGE(0xfc00, 0xfcff) AM_READ( SMH_BANK4)
295   AM_RANGE(0xfd00, 0xfd0f) AM_READ( c16_6551_port_r)
296   AM_RANGE(0xfd10, 0xfd1f) AM_READ( plus4_6529_port_r)
297   AM_RANGE(0xfd20, 0xfd2f) AM_READ( c364_speech_r )
298   AM_RANGE(0xfd30, 0xfd3f) AM_READ( c16_6529_port_r) /* 6529 keyboard matrix */
299#if 0
300   AM_RANGE( 0xfd40, 0xfd5f) AM_READ( sid6581_0_port_r ) /* sidcard, eoroidpro ... */
301   AM_RANGE(0xfec0, 0xfedf) AM_READ( c16_iec9_port_r) /* configured in c16_common_init */
302   AM_RANGE(0xfee0, 0xfeff) AM_READ( c16_iec8_port_r) /* configured in c16_common_init */
303#endif
304   AM_RANGE(0xff00, 0xff1f) AM_READ( ted7360_port_r)
305   AM_RANGE(0xff20, 0xffff) AM_READ( SMH_BANK8)
306/*  { 0x10000, 0x3ffff, SMH_ROM }, */
307ADDRESS_MAP_END
308
309static ADDRESS_MAP_START( c364_writemem , ADDRESS_SPACE_PROGRAM, 8)
310   AM_RANGE(0x0000, 0xfcff) AM_WRITE( SMH_BANK9)
311   AM_RANGE(0xfd00, 0xfd0f) AM_WRITE( c16_6551_port_w)
312   AM_RANGE(0xfd10, 0xfd1f) AM_WRITE( plus4_6529_port_w)
313   AM_RANGE(0xfd20, 0xfd2f) AM_WRITE( c364_speech_w )
314   AM_RANGE(0xfd30, 0xfd3f) AM_WRITE( c16_6529_port_w) /* 6529 keyboard matrix */
315#if 0
316   AM_RANGE(0xfd40, 0xfd5f) AM_WRITE( sid6581_0_port_w)
317#endif
251static ADDRESS_MAP_START(c364_map , ADDRESS_SPACE_PROGRAM, 8)
252   AM_RANGE(0x0000, 0x7fff) AM_READ(SMH_BANK9)
253   AM_RANGE(0x8000, 0xbfff) AM_READ(SMH_BANK2)
254   AM_RANGE(0xc000, 0xfbff) AM_READ(SMH_BANK3)
255   AM_RANGE(0xfc00, 0xfcff) AM_READ(SMH_BANK4)
256   AM_RANGE(0x0000, 0xfcff) AM_WRITE(SMH_BANK9)
257   AM_RANGE(0xfd00, 0xfd0f) AM_READWRITE(c16_6551_port_r, c16_6551_port_w)
258   AM_RANGE(0xfd10, 0xfd1f) AM_READWRITE(plus4_6529_port_r, plus4_6529_port_w)
259   AM_RANGE(0xfd20, 0xfd2f) AM_READWRITE(c364_speech_r, c364_speech_w)
260   AM_RANGE(0xfd30, 0xfd3f) AM_READWRITE(c16_6529_port_r, c16_6529_port_w) /* 6529 keyboard matrix */
318261   AM_RANGE(0xfdd0, 0xfddf) AM_WRITE( c16_select_roms) /* rom chips selection */
319262#if 0
320   AM_RANGE(0xfec0, 0xfedf) AM_WRITE( c16_iec9_port_w) /*configured in c16_common_init */
321   AM_RANGE(0xfee0, 0xfeff) AM_WRITE( c16_iec8_port_w) /*configured in c16_common_init */
263   AM_RANGE(0xfd40, 0xfd5f) AM_READWRITE(sid6581_0_port_r, sid6581_0_port_w)   /* sidcard, eoroidpro ... */
264   AM_RANGE(0xfec0, 0xfedf) AM_READWRITE(c16_iec9_port_r, c16_iec9_port_w)      /*configured in c16_common_init */
265   AM_RANGE(0xfee0, 0xfeff) AM_READWRITE(c16_iec8_port_r, c16_iec8_port_w)      /*configured in c16_common_init */
322266#endif
323   AM_RANGE(0xff00, 0xff1f) AM_WRITE( ted7360_port_w)
324   AM_RANGE(0xff20, 0xff3d) AM_WRITE( SMH_RAM)
325   AM_RANGE(0xff3e, 0xff3e) AM_WRITE( c16_switch_to_rom)
326   AM_RANGE(0xff3f, 0xff3f) AM_WRITE( c16_switch_to_ram)
327   AM_RANGE(0xff40, 0xffff) AM_WRITE( SMH_RAM)
328//  {0x10000, 0x3ffff, SMH_ROM},
267   AM_RANGE(0xff00, 0xff1f) AM_READWRITE(ted7360_port_r, ted7360_port_w)
268   AM_RANGE(0xff20, 0xffff) AM_READ(SMH_BANK8)
269   AM_RANGE(0xff20, 0xff3d) AM_WRITE(SMH_RAM)
270   AM_RANGE(0xff3e, 0xff3e) AM_WRITE(c16_switch_to_rom)
271   AM_RANGE(0xff3f, 0xff3f) AM_WRITE(c16_switch_to_ram)
272   AM_RANGE(0xff40, 0xffff) AM_WRITE(SMH_RAM)
329273ADDRESS_MAP_END
330274
331275
r3174r3175
570514static MACHINE_DRIVER_START( c16 )
571515   /* basic machine hardware */
572516   MDRV_CPU_ADD("main", M7501, 1400000)        /* 7.8336 Mhz */
573   MDRV_CPU_PROGRAM_MAP(c16_readmem, c16_writemem)
517   MDRV_CPU_PROGRAM_MAP(c16_map, 0)
574518   MDRV_CPU_VBLANK_INT("main", c16_frame_interrupt)
575519   MDRV_CPU_PERIODIC_INT(ted7360_raster_interrupt, TED7360_HRETRACERATE)
576520   MDRV_INTERLEAVE(1)
r3174r3175
628572static MACHINE_DRIVER_START( plus4 )
629573   MDRV_IMPORT_FROM( c16 )
630574   MDRV_CPU_REPLACE( "main", M7501, 1200000)
631   MDRV_CPU_PROGRAM_MAP( plus4_readmem, plus4_writemem )
575   MDRV_CPU_PROGRAM_MAP(plus4_map, 0)
632576   MDRV_SCREEN_MODIFY("main")
633577   MDRV_SCREEN_REFRESH_RATE(TED7360NTSC_VRETRACERATE)
634578
r3174r3175
668612   MDRV_SCREEN_MODIFY("main")
669613   MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
670614   MDRV_CPU_MODIFY( "main" )
671   MDRV_CPU_PROGRAM_MAP(c364_readmem, c364_writemem)
615   MDRV_CPU_PROGRAM_MAP(c364_map, 0)
672616MACHINE_DRIVER_END
673617
674618static DRIVER_INIT( c16 )      { c16_driver_init(machine); }
docs/messnew.txt
r3174r3175
10.127.1
10.127.1
22
33New System Drivers Supported (in no particular order):
44------------------------------------------------------
r3174r3175
1111System Driver Changes:
1212----------------------
1313
14- [C16] Added partial support for tape emulation using MESS core
15  functions (only loading and only .wav) [Fabio Priuli, Roberto Zandona']
14- [C16] Added support for tape emulation using MESS core functions (only
15  loading, both .wav and .tap formats) [Fabio Priuli, Roberto Zandona']
1616
1717- [C16] Refactored cartridge code to rely on MESS core functions. As
1818  a result carts are now working. Also removed -cart2 device, since
r3174r3175
2323  had plugged your joystick in port 2). This helps with games which expect
2424  joystick inputs from port 2 of the C16 [Fabio Priuli]
2525
26- [C128] Added partial support for tape emulation using MESS core
27  functions (only loading and only .wav) [Fabio Priuli]
26- [C128] Added support for tape emulation using MESS core functions (only
27  loading, both .wav and .tap formats) [Fabio Priuli]
2828
2929- [C128] Refactored cartridge code to rely on MESS core functions.
30  Currently, .crt emulation uses C64 cart code and therefore support has
31  not improved (yet) [Fabio Priuli]
30  Currently, .crt emulation uses unmodified C64 cart code and therefore
31  support has not improved (yet) [Fabio Priuli]
3232
33- [C64] Added partial support for tape emulation using MESS core
34  functions (only loading and only .wav) [Fabio Priuli, Roberto Zandona']
33- [C64] Added support for tape emulation using MESS core functions (only
34  loading, both .wav and .tap formats) [Fabio Priuli, Roberto Zandona']
3535
3636- [C64] Fixed border color during tape loading [Roberto Zandona']
3737
r3174r3175
5353  joystick inputs from port 2 of the C64 [Fabio Priuli]
5454
5555- [C65] Added preliminary cartridge support through MESS core functions.
56  Currently, .crt emulation uses C64 cart code and therefore is not
57  working [Fabio Priuli]
56  Currently, .crt emulation uses unmodified C64 cart code and therefore
57  is not working [Fabio Priuli]
5858
5959- [CBMB] Refactored cartridge code to rely on MESS core functions. Disabled
6060  .crt support (.10, .20, .40 and .60 files working as before) since I
r3174r3175
8181
8282- [TMC2000] Fixed quickloading. [Curt Coder]
8383
84- [VIC20] Added partial support for tape emulation using MESS core
85  functions (only loading and only .wav) [Fabio Priuli]
84- [VIC20] Added support for tape emulation using MESS core functions (only
85  loading, both .wav and .tap formats) [Fabio Priuli]
8686
8787- [VIC20] Refactored cartridge code to rely on MESS core functions. As
8888  a result carts are now working (fixed remaining half of bug #1603). Also

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