diff options
| author | 2009-11-26 17:25:09 +0000 | |
|---|---|---|
| committer | 2009-11-26 17:25:09 +0000 | |
| commit | 4f90eda49bd98e6ec0ffaa73be08d50aa5222b82 (patch) | |
| tree | bb9e9064e591b5a918e2e4152ee5b7cd2b5cf4c9 /src/emu/devcb.c | |
| parent | 680cf15e6a5adc7d1ce546f2d098d2b60526cb6e (diff) | |
DEVCB_INPUT_PORT(tag) can be used for write callbacks.
Diffstat (limited to 'src/emu/devcb.c')
| -rw-r--r-- | src/emu/devcb.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/src/emu/devcb.c b/src/emu/devcb.c index 4eb78c8d50d..1c3261e279f 100644 --- a/src/emu/devcb.c +++ b/src/emu/devcb.c @@ -104,6 +104,11 @@ void devcb_resolve_read_line(devcb_resolved_read_line *resolved, const devcb_rea write line definition to a live definition -------------------------------------------------*/ +static WRITE_LINE_DEVICE_HANDLER( trampoline_write_port_to_write_line ) +{ + input_port_write_direct((const input_port_config *)device, state, 0xffffffff); +} + static WRITE_LINE_DEVICE_HANDLER( trampoline_write8_to_write_line ) { const devcb_resolved_write_line *resolved = (const devcb_resolved_write_line *)device; @@ -122,8 +127,16 @@ void devcb_resolve_write_line(devcb_resolved_write_line *resolved, const devcb_w /* reset the resolved structure */ memset(resolved, 0, sizeof(*resolved)); + if (config->type == DEVCB_TYPE_INPUT) + { + resolved->target = input_port_by_tag(&device->machine->portlist, config->tag); + if (resolved->target == NULL) + fatalerror("devcb_resolve_write_line: unable to find input port '%s' (requested by %s '%s')", config->tag, device_get_name(device), device->tag); + resolved->write = trampoline_write_port_to_write_line; + } + /* address space handlers */ - if (config->type >= DEVCB_TYPE_MEMORY(ADDRESS_SPACE_PROGRAM) && config->type < DEVCB_TYPE_MEMORY(ADDRESS_SPACES) && config->writespace != NULL) + else if (config->type >= DEVCB_TYPE_MEMORY(ADDRESS_SPACE_PROGRAM) && config->type < DEVCB_TYPE_MEMORY(ADDRESS_SPACES) && config->writespace != NULL) { FPTR space = (FPTR)config->type - (FPTR)DEVCB_TYPE_MEMORY(ADDRESS_SPACE_PROGRAM); const device_config *cpu; @@ -269,6 +282,11 @@ void devcb_resolve_read8(devcb_resolved_read8 *resolved, const devcb_read8 *conf 8-bit write definition to a live definition -------------------------------------------------*/ +static WRITE8_DEVICE_HANDLER( trampoline_write_port_to_write8 ) +{ + input_port_write_direct((const input_port_config *)device, data, 0xff); +} + static WRITE8_DEVICE_HANDLER( trampoline_write_line_to_write8 ) { const devcb_resolved_write8 *resolved = (const devcb_resolved_write8 *)device; @@ -280,8 +298,16 @@ void devcb_resolve_write8(devcb_resolved_write8 *resolved, const devcb_write8 *c /* reset the resolved structure */ memset(resolved, 0, sizeof(*resolved)); + if (config->type == DEVCB_TYPE_INPUT) + { + resolved->target = input_port_by_tag(&device->machine->portlist, config->tag); + if (resolved->target == NULL) + fatalerror("devcb_resolve_read_line: unable to find input port '%s' (requested by %s '%s')", config->tag, device_get_name(device), device->tag); + resolved->write = trampoline_write_port_to_write8; + } + /* address space handlers */ - if (config->type >= DEVCB_TYPE_MEMORY(ADDRESS_SPACE_PROGRAM) && config->type < DEVCB_TYPE_MEMORY(ADDRESS_SPACES) && config->writespace != NULL) + else if (config->type >= DEVCB_TYPE_MEMORY(ADDRESS_SPACE_PROGRAM) && config->type < DEVCB_TYPE_MEMORY(ADDRESS_SPACES) && config->writespace != NULL) { FPTR space = (FPTR)config->type - (FPTR)DEVCB_TYPE_MEMORY(ADDRESS_SPACE_PROGRAM); const device_config *cpu; |
