diff options
| -rw-r--r-- | sms.c | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -12,8 +12,8 @@ static void *memory_io_write(uint32_t location, void *vcontext, uint8_t value) z80_context *z80 = vcontext; sms_context *sms = z80->system; if (location & 1) { - sms->io.ports[0].control = ~(value << 5 & 0x60); - sms->io.ports[1].control = ~(value << 3 & 0x60); + sms->io.ports[0].control = (~value) << 5 & 0x60; + sms->io.ports[1].control = (~value) << 3 & 0x60; io_data_write(sms->io.ports, value << 1, z80->current_cycle); io_data_write(sms->io.ports + 1, value >> 1, z80->current_cycle); } else { |