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SSD0323 vertical incrememnt mode. 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3696 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2007-11-18 21:54:57 +00:00
parent 8281db4db9
commit 7ac56ff043
1 changed files with 28 additions and 8 deletions
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36
hw/ssd0323.c
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@ -30,6 +30,12 @@ do { fprintf(stderr, "ssd0323: error: " fmt , ##args);} while (0)
/* Scaling factor for pixels. */
#define MAGNIFY 4
#define REMAP_SWAP_COLUMN 0x01
#define REMAP_SWAP_NYBBLE 0x02
#define REMAP_VERTICAL 0x04
#define REMAP_SWAP_COM 0x10
#define REMAP_SPLIT_COM 0x40
enum ssd0323_mode
{
SSD0323_CMD,
@ -49,6 +55,7 @@ typedef struct {
int col_start;
int col_end;
int redraw;
int remap;
enum ssd0323_mode mode;
uint8_t framebuffer[128 * 80 / 2];
} ssd0323_state;
@ -60,13 +67,24 @@ int ssd0323_xfer_ssi(void *opaque, int data)
case SSD0323_DATA:
DPRINTF("data 0x%02x\n", data);
s->framebuffer[s->col + s->row * 64] = data;
s->col++;
if (s->col > s->col_end) {
if (s->remap & REMAP_VERTICAL) {
s->row++;
s->col = s->col_start;
}
if (s->row > s->row_end) {
s->row = s->row_start;
if (s->row > s->row_end) {
s->row = s->row_start;
s->col++;
}
if (s->col > s->col_end) {
s->col = s->col_start;
}
} else {
s->col++;
if (s->col > s->col_end) {
s->row++;
s->col = s->col_start;
}
if (s->row > s->row_end) {
s->row = s->row_start;
}
}
s->redraw = 1;
break;
@ -82,12 +100,12 @@ int ssd0323_xfer_ssi(void *opaque, int data)
#define DATA(x) if (s->cmd_len <= (x)) return 0
case 0x15: /* Set column. */
DATA(2);
s->col_start = s->cmd_data[0] % 64;
s->col = s->col_start = s->cmd_data[0] % 64;
s->col_end = s->cmd_data[1] % 64;
break;
case 0x75: /* Set row. */
DATA(2);
s->row_start = s->cmd_data[0] % 80;
s->row = s->row_start = s->cmd_data[0] % 80;
s->row_end = s->cmd_data[1] % 80;
break;
case 0x81: /* Set contrast */
@ -99,6 +117,7 @@ int ssd0323_xfer_ssi(void *opaque, int data)
case 0xa0: /* Set remapping. */
/* FIXME: Implement this. */
DATA(1);
s->remap = s->cmd_data[0];
break;
case 0xa1: /* Set display start line. */
case 0xa2: /* Set display offset. */
@ -207,6 +226,7 @@ static void ssd0323_update_display(void *opaque)
}
p += dest_width;
}
/* TODO: Implement row/column remapping. */
dest = s->ds->data;
for (y = 0; y < 64; y++) {
line = y;