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t6k11: quick-and-dirty support for Graph 35+E II

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This commit is contained in:
lephe 2019-05-03 17:12:41 +02:00
parent 8e0d2eb783
commit 37e07dabcc
1 changed files with 31 additions and 7 deletions
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38
src/t6k11/t6k11.c
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@ -9,6 +9,8 @@
#include <gint/defs/types.h>
#include <gint/mpu.h>
#include <core/syscalls.h>
#ifdef FX9860G
//---
@ -52,6 +54,15 @@ GDATA static volatile uint8_t *sel = (void *)0xb4000000;
/* RS = 1: Command data or vram data */
GDATA static volatile uint8_t *cmd = (void *)0xb4010000;
/* variant() - check for the T6K11 variant that equips the Graph 35+E II
TODO: At least detect some piece of Graph 35+E II hardware. */
static int variant(void)
{
char os[11];
__os_version(os);
return (os[1] == '3');
}
/* command() - send a command to set the value of a register
@reg Register number
@data Value to set in reg */
@ -71,7 +82,7 @@ GINLINE static uint8_t status(void)
@buf Buffer to take data from */
GINLINE static void write_row(const uint8_t *buf)
{
*sel = reg_data;
*sel = variant() ? 10 : reg_data;
/* Unroll the loop for more speed */
*cmd = *buf++;
@ -104,14 +115,23 @@ void t6k11_display(const void *vram, int y1, int y2, size_t stride)
{
for(int y = y1; y < y2; y++)
{
/* Set the X-address register for this row */
command(reg_xaddr, y | 0xc0);
if(variant())
{
command(8, y | 0x80);
command(8, 4);
}
/* Use Y-Up mode */
command(reg_counter, cnt_yup);
else
{
/* Set the X-address register for this row */
command(reg_xaddr, y | 0xc0);
/* Start counting Y from 0 */
command(reg_yaddr, 0);
/* Use Y-Up mode */
command(reg_counter, cnt_yup);
/* Start counting Y from 0 */
command(reg_yaddr, 0);
}
/* Send the row's data to the device */
write_row(vram);
@ -181,12 +201,16 @@ GBSS static ctx_t sys_ctx;
static void ctx_save(void *buf)
{
if(variant()) return;
ctx_t *ctx = buf;
ctx->strd = status();
}
static void ctx_restore(void *buf)
{
if(variant()) return;
ctx_t *ctx = buf;
/* Set an X-address of 0 with the original display mode */