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Add software turbo control to Laser Turbo XT. Patch from Greatpsycho.

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This commit is contained in:
SarahW 2019-04-17 18:36:02 +01:00
commit 4851a2fa9b
2 changed files with 15 additions and 2 deletions
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15
src/laserxt.c
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@ -7,6 +7,7 @@ static int laserxt_emspage[4];
static int laserxt_emscontrol[4];
static mem_mapping_t laserxt_ems_mapping[4];
static int laserxt_ems_baseaddr_index = 0;
static uint8_t laserxt_turbo = 0x80;
static uint32_t get_laserxt_ems_addr(uint32_t addr)
{
@ -25,6 +26,11 @@ static void laserxt_write(uint16_t port, uint8_t val, void *priv)
switch (port)
{
case 0x01F0:
laserxt_turbo = val;
cpu_set_turbo((val & 0x80) >> 7);
//pclog("Turbo %s at %04X:%04X\n", (val & 0x80) ? "Enabled" : "Disabled", CS, cpu_state.oldpc);
break;
case 0x0208: case 0x4208: case 0x8208: case 0xC208:
laserxt_emspage[port >> 14] = val;
paddr = 0xC0000 + (port & 0xC000) + (((laserxt_ems_baseaddr_index + (4 - (port >> 14))) & 0x0C) << 14);
@ -64,6 +70,9 @@ static uint8_t laserxt_read(uint16_t port, void *priv)
{
switch (port)
{
case 0x01F0:
return laserxt_turbo;
case 0x0208: case 0x4208: case 0x8208: case 0xC208:
return laserxt_emspage[port >> 14];
@ -95,6 +104,10 @@ void laserxt_init()
{
int i;
io_sethandler(0x01F0, 0x0001, laserxt_read, NULL, NULL, laserxt_write, NULL, NULL, NULL);
laserxt_turbo = 0x80;
cpu_set_turbo(1);
if (mem_size > 640)
{
io_sethandler(0x0208, 0x0002, laserxt_read, NULL, NULL, laserxt_write, NULL, NULL, NULL);
@ -111,5 +124,5 @@ void laserxt_init()
mem_mapping_add(&laserxt_ems_mapping[i], 0xE0000 + (i << 14), 0x4000, mem_read_laserxtems, NULL, NULL, mem_write_laserxtems, NULL, NULL, ram + 0xA0000 + (i << 14), 0, NULL);
mem_mapping_disable(&laserxt_ems_mapping[i]);
}
mem_set_mem_state(0x0c0000, 0x40000, MEM_READ_EXTERNAL | MEM_WRITE_EXTERNAL);
mem_set_mem_state(0x0a0000, 0x60000, MEM_READ_EXTERNAL | MEM_WRITE_EXTERNAL);
}

2
src/pc.c
View file

@ -416,9 +416,9 @@ void resetpchard()
disc_load(0, discfns[0]);
disc_load(1, discfns[1]);
model_init();
if (!AT && models[model].max_ram > 640 && models[model].max_ram <= 768 && !video_is_ega_vga())
mem_set_704kb();
model_init();
mouse_emu_init();
video_init();
speaker_init();