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Cleanups and warning fixes to grid 1520

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This commit is contained in:
Jasmine Iwanek 2024-12-09 16:59:18 -05:00
parent de0cd423b9
commit 93041d1483
1 changed files with 33 additions and 44 deletions
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77
src/machine/m_at_grid.c
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@ -84,51 +84,54 @@ typedef struct {
static uint32_t get_grid_ems_paddr(grid_t *dev, uint32_t addr) {
uint32_t slot = (addr >> GRID_EMS_PAGE_SHIFT) & 0x3;
uint32_t slot = (addr >> GRID_EMS_PAGE_SHIFT) & 0x3;
uint32_t paddr = addr;
if (dev->grid_ems_page[slot] & 0x80) {
if (dev->grid_ems_page[slot] & 0x80)
paddr = GRID_EXTENDED_BASE + ((uint32_t)(dev->grid_ems_page[slot] & 0x7F) << GRID_EMS_PAGE_SHIFT) + (addr & GRID_EMS_PAGE_MASK);
}
return paddr;
}
static void grid_ems_mem_write8(uint32_t addr, uint8_t val, void *priv) {
grid_t *dev = (grid_t *)priv;
grid_t *dev = (grid_t *) priv;
addr = get_grid_ems_paddr(dev, addr);
if (addr < (mem_size << 10)) {
if (addr < (mem_size << 10))
ram[addr] = val;
}
}
static uint8_t grid_ems_mem_read8(uint32_t addr, void *priv) {
grid_t *dev = (grid_t *)priv;
grid_t *dev = (grid_t *) priv;
uint8_t val = 0xFF;
addr = get_grid_ems_paddr(dev, addr);
if (addr < (mem_size << 10)) {
if (addr < (mem_size << 10))
val = ram[addr];
}
return val;
}
static void grid_ems_mem_write16(uint32_t addr, uint16_t val, void *priv) {
grid_t *dev = (grid_t *)priv;
grid_t *dev = (grid_t *) priv;
addr = get_grid_ems_paddr(dev, addr);
if (addr < (mem_size << 10)) {
if (addr < (mem_size << 10))
*(uint16_t *)&(ram[addr]) = val;
}
}
static uint16_t grid_ems_mem_read16(uint32_t addr, void *priv) {
grid_t *dev = (grid_t *)priv;
grid_t *dev = (grid_t *) priv;
uint16_t val = 0xFFFF;
addr = get_grid_ems_paddr(dev, addr);
if (addr < (mem_size << 10)) {
if (addr < (mem_size << 10))
val = *(uint16_t *)&(ram[addr]);
}
return val;
}
@ -145,9 +148,7 @@ static void grid_ems_update_mapping(grid_t *dev, uint32_t slot) {
}
static void grid_io_write(uint16_t port, uint8_t val, void *priv) {
grid_t *dev = (grid_t *)priv;
int i;
uint32_t paddr, vaddr;
grid_t *dev = (grid_t *) priv;
switch (port) {
case GRID_426:
@ -174,11 +175,10 @@ static void grid_io_write(uint16_t port, uint8_t val, void *priv) {
case GRID_TURBO:
if ((dev->grid_turbo ^ val) & 1) {
dev->grid_turbo = val;
if (dev->grid_turbo) {
if (dev->grid_turbo)
cpu_dynamic_switch(cpu);
} else {
else
cpu_dynamic_switch(0); /* 286/6 */
}
}
break;
case GRID_EMS_PAGE_0:
@ -198,32 +198,28 @@ static void grid_io_write(uint16_t port, uint8_t val, void *priv) {
break;
}
case GRID_HIGH_ENABLE: {
uint32_t i;
if (((val ^ dev->grid_high_enable) & 0x1) == 0)
break; // no change
dev->grid_high_enable = val;
if (dev->grid_high_enable & 0x1) {
for (i = 0; i < 4; i++) {
for (uint8_t i = 0; i < 4; i++)
mem_mapping_disable(&dev->grid_ems_mapping[i]);
}
mem_mapping_enable(&ram_high_mapping);
} else {
mem_mapping_disable(&ram_high_mapping);
for (i = 0; i < 4; i++) {
for (uint8_t i = 0; i < 4; i++)
grid_ems_update_mapping(dev, i);
}
}
flushmmucache();
break;
}
default:
;
break;
}
}
static uint8_t grid_io_read(uint16_t port, void *priv) {
grid_t *dev = (grid_t *)priv;
grid_t *dev = (grid_t *) priv;
switch (port) {
case GRID_426:
@ -256,10 +252,11 @@ static uint8_t grid_io_read(uint16_t port, void *priv) {
case GRID_EMS_PAGE_2:
case GRID_EMS_PAGE_3: {
uint32_t slot = (port >> 14) & 0x3;
return dev->grid_ems_page[slot];
}
default:
;
break;
}
return 0xff;
@ -268,9 +265,8 @@ static uint8_t grid_io_read(uint16_t port, void *priv) {
static void *
grid_init(const device_t *info)
{
uint32_t slot;
grid_t *dev = calloc(1, sizeof(grid_t));
io_sethandler(GRID_ROM_SUBSYSTEM, 0x0008, grid_io_read, NULL, NULL, grid_io_write, NULL, NULL, dev);
io_sethandler(GRID_UNUSED_424, 0x0001, grid_io_read, NULL, NULL, grid_io_write, NULL, NULL, dev);
io_sethandler(GRID_426, 0x0001, grid_io_read, NULL, NULL, grid_io_write, NULL, NULL, dev);
@ -286,7 +282,7 @@ grid_init(const device_t *info)
io_sethandler(GRID_EMS_PAGE_3, 0x0001, grid_io_read, NULL, NULL, grid_io_write, NULL, NULL, dev);
dev->grid_high_enable = 1;
for (slot = 0; slot < 4; slot++) {
for (uint8_t slot = 0; slot < 4; slot++) {
dev->grid_ems_page[slot] = 0;
mem_mapping_add(&dev->grid_ems_mapping[slot], GRID_EMS_BASE + (slot << GRID_EMS_PAGE_SHIFT), GRID_EMS_PAGE_SIZE, grid_ems_mem_read8, grid_ems_mem_read16, NULL,
grid_ems_mem_write8, grid_ems_mem_write16, NULL, ram + GRID_EXTENDED_BASE + (slot << GRID_EMS_PAGE_SHIFT), MEM_MAPPING_EXTERNAL, dev);
@ -297,18 +293,18 @@ grid_init(const device_t *info)
}
static void grid_close(void *priv) {
grid_t *dev = (grid_t *)priv;
grid_t *dev = (grid_t *) priv;
free(dev);
}
static void grid_reset(void *priv) {
grid_t *dev = (grid_t *)priv;
uint32_t slot;
grid_t *dev = (grid_t *) priv;
dev->grid_high_enable = 1;
mem_mapping_enable(&ram_high_mapping);
dev->grid_turbo = 0x1;
for (slot = 0; slot < 4; slot++) {
for (uint8_t slot = 0; slot < 4; slot++) {
dev->grid_ems_page[slot] = 0;
mem_mapping_disable(&dev->grid_ems_mapping[slot]);
}
@ -334,7 +330,6 @@ const device_t grid_device = {
.config = NULL
};
int machine_at_grid1520_init(const machine_t *model) {
int ret = 0;
@ -357,9 +352,3 @@ int machine_at_grid1520_init(const machine_t *model) {
return ret;
}
/*
*/