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Add dummy THC and TEC registers to TCX 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2775 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
blueswir1 2007-05-06 17:39:55 +00:00
parent 384ccb5d34
commit 8508b89e36
1 changed files with 36 additions and 3 deletions
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39
hw/tcx.c
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@ -26,6 +26,9 @@
#define MAXX 1024
#define MAXY 768
#define TCX_DAC_NREGS 16
#define TCX_THC_NREGS_8 0x081c
#define TCX_THC_NREGS_24 0x1000
#define TCX_TEC_NREGS 0x1000
typedef struct TCXState {
uint32_t addr;
@ -467,12 +470,34 @@ static CPUWriteMemoryFunc *tcx_dac_write[3] = {
tcx_dac_writel,
};
static uint32_t tcx_dummy_readl(void *opaque, target_phys_addr_t addr)
{
return 0;
}
static void tcx_dummy_writel(void *opaque, target_phys_addr_t addr,
uint32_t val)
{
}
static CPUReadMemoryFunc *tcx_dummy_read[3] = {
tcx_dummy_readl,
tcx_dummy_readl,
tcx_dummy_readl,
};
static CPUWriteMemoryFunc *tcx_dummy_write[3] = {
tcx_dummy_writel,
tcx_dummy_writel,
tcx_dummy_writel,
};
void tcx_init(DisplayState *ds, uint32_t addr, uint8_t *vram_base,
unsigned long vram_offset, int vram_size, int width, int height,
int depth)
{
TCXState *s;
int io_memory;
int io_memory, dummy_memory;
int size;
s = qemu_mallocz(sizeof(TCXState));
@ -495,6 +520,10 @@ void tcx_init(DisplayState *ds, uint32_t addr, uint8_t *vram_base,
io_memory = cpu_register_io_memory(0, tcx_dac_read, tcx_dac_write, s);
cpu_register_physical_memory(addr + 0x00200000, TCX_DAC_NREGS, io_memory);
dummy_memory = cpu_register_io_memory(0, tcx_dummy_read, tcx_dummy_write,
s);
cpu_register_physical_memory(addr + 0x00700000, TCX_TEC_NREGS,
dummy_memory);
if (depth == 24) {
// 24-bit plane
size = vram_size * 4;
@ -509,9 +538,13 @@ void tcx_init(DisplayState *ds, uint32_t addr, uint8_t *vram_base,
s->cplane = (uint32_t *)vram_base;
s->cplane_offset = vram_offset;
cpu_register_physical_memory(addr + 0x0a000000, size, vram_offset);
graphic_console_init(s->ds, tcx24_update_display, tcx24_invalidate_display,
tcx24_screen_dump, s);
cpu_register_physical_memory(addr + 0x00301000, TCX_THC_NREGS_24,
dummy_memory);
graphic_console_init(s->ds, tcx24_update_display,
tcx24_invalidate_display, tcx24_screen_dump, s);
} else {
cpu_register_physical_memory(addr + 0x00300000, TCX_THC_NREGS_8,
dummy_memory);
graphic_console_init(s->ds, tcx_update_display, tcx_invalidate_display,
tcx_screen_dump, s);
}