Commit 7ac56ff0 authored by Paul Brook's avatar Paul Brook
Browse files

SSD0323 vertical incrememnt mode. 


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3696 c046a42c-6fe2-441c-8c8c-71466251a162
parent 8281db4d

hw/ssd0323.c

+28 −8
Original line number Diff line number Diff line
@@ -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;
@@ -60,6 +67,16 @@ 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;

        if (s->remap & REMAP_VERTICAL) {

            s->row++;

            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++;
@@ -68,6 +85,7 @@ int ssd0323_xfer_ssi(void *opaque, int data) 
            if (s->row > s->row_end) {

                s->row = s->row_start;

            }

        }

        s->redraw = 1;

        break;

    case SSD0323_CMD:
@@ -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;