diff options
Diffstat (limited to 'hw/ssd0323.c')
| -rw-r--r-- | hw/ssd0323.c | 36 |
1 files changed, 28 insertions, 8 deletions
diff --git a/hw/ssd0323.c b/hw/ssd0323.c index 8c5ab424e..c31e49a91 100644 --- a/hw/ssd0323.c +++ b/hw/ssd0323.c @@ -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; |