diff options
| -rw-r--r-- | genesis.c | 50 | ||||
| -rw-r--r-- | io.h | 3 |
2 files changed, 53 insertions, 0 deletions
@@ -517,6 +517,29 @@ static m68k_context * io_write(uint32_t location, m68k_context * context, uint8_ case 0x6: gen->io.ports[2].control = value; break; + case 0x7: + gen->io.ports[0].serial_out = value; + break; + case 0x8: + case 0xB: + case 0xE: + //serial input port is not writeable + break; + case 0x9: + gen->io.ports[0].serial_ctrl = value; + break; + case 0xA: + gen->io.ports[1].serial_out = value; + break; + case 0xC: + gen->io.ports[1].serial_ctrl = value; + break; + case 0xD: + gen->io.ports[2].serial_out = value; + break; + case 0xF: + gen->io.ports[2].serial_ctrl = value; + break; } } else { if (location == 0x1100) { @@ -628,6 +651,33 @@ static uint8_t io_read(uint32_t location, m68k_context * context) case 0x6: value = gen->io.ports[2].control; break; + case 0x7: + value = gen->io.ports[0].serial_out; + break; + case 0x8: + value = gen->io.ports[0].serial_in; + break; + case 0x9: + value = gen->io.ports[0].serial_ctrl; + break; + case 0xA: + value = gen->io.ports[1].serial_out; + break; + case 0xB: + value = gen->io.ports[1].serial_in; + break; + case 0xC: + value = gen->io.ports[1].serial_ctrl; + break; + case 0xD: + value = gen->io.ports[2].serial_out; + break; + case 0xE: + value = gen->io.ports[2].serial_in; + break; + case 0xF: + value = gen->io.ports[2].serial_ctrl; + break; default: value = 0xFF; } @@ -57,6 +57,9 @@ typedef struct { uint8_t output; uint8_t control; uint8_t input[3]; + uint8_t serial_out; + uint8_t serial_in; + uint8_t serial_ctrl; uint8_t device_type; } io_port; |