src/mess/drivers/phunsy.c
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| 10 | 10 | #include "cpu/s2650/s2650.h" |
| 11 | 11 | |
| 12 | 12 | |
| 13 | #define LOG 1 |
| 14 | |
| 15 | |
| 13 | 16 | class phunsy_state : public driver_device |
| 14 | 17 | { |
| 15 | 18 | public: |
| r9527 | r9528 | |
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| 17 | 20 | : driver_device(machine, config) { } |
| 18 | 21 | |
| 19 | 22 | UINT8 *video_ram; |
| 23 | UINT8 data_out; |
| 20 | 24 | UINT8 keyboard_input; |
| 21 | 25 | emu_timer *kb_timer; |
| 22 | 26 | }; |
| r9527 | r9528 | |
|---|
| 36 | 40 | { |
| 37 | 41 | phunsy_state *state = space->machine->driver_data<phunsy_state>(); |
| 38 | 42 | |
| 43 | if (LOG) |
| 44 | logerror("%s: phunsy_data_w %02x\n", cpuexec_describe_context(space->machine), data); |
| 45 | |
| 46 | state->data_out = data; |
| 47 | |
| 48 | /* b0 - TTY out */ |
| 49 | /* b1 - select MDCR / keyboard */ |
| 50 | /* b2 - Clear keyboard strobe signal */ |
| 39 | 51 | if ( data & 0x04 ) |
| 40 | 52 | { |
| 41 | | /* Keybaord strobe received, ready to receive key data */ |
| 42 | 53 | state->keyboard_input |= 0x80; |
| 43 | 54 | } |
| 55 | /* b3 - speaker output */ |
| 56 | /* b4 - -REV MDCR output */ |
| 57 | /* b5 - -FWD MDCR output */ |
| 58 | /* b6 - -WCD MDCR output */ |
| 59 | /* b7 - WDA MDCR output */ |
| 44 | 60 | } |
| 45 | 61 | |
| 46 | 62 | |
| 47 | 63 | static READ8_HANDLER( phunsy_data_r ) |
| 48 | 64 | { |
| 49 | 65 | phunsy_state *state = space->machine->driver_data<phunsy_state>(); |
| 66 | UINT8 data; |
| 50 | 67 | |
| 51 | | return state->keyboard_input; |
| 68 | if (LOG) |
| 69 | logerror("%s: phunsy_data_r\n", cpuexec_describe_context(space->machine)); |
| 70 | |
| 71 | if ( state->data_out & 0x02 ) |
| 72 | { |
| 73 | /* MDCR selected */ |
| 74 | /* b0 - TTY input */ |
| 75 | /* b1 - SK1 switch input */ |
| 76 | /* b2 - SK2 switch input */ |
| 77 | /* b3 - -WEN MDCR input */ |
| 78 | /* b4 - -CIP MDCR input */ |
| 79 | /* b5 - -BET MDCR input */ |
| 80 | /* b6 - RDA MDCR input */ |
| 81 | /* b7 - RDC MDCR input */ |
| 82 | data = 0xFF; |
| 83 | } |
| 84 | else |
| 85 | { |
| 86 | /* Keyboard selected */ |
| 87 | /* b0-b6 - ASCII code from keyboard */ |
| 88 | /* b7 - strobe signal */ |
| 89 | data = state->keyboard_input; |
| 90 | } |
| 91 | |
| 92 | return data; |
| 52 | 93 | } |
| 53 | 94 | |
| 54 | 95 | |