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Fixes #71 - Handle writes to screen soft switches

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This commit is contained in:
Stefan Arentz 2016-12-10 16:18:42 -10:00
parent 733f2e6141
commit a9027b884b
1 changed files with 38 additions and 0 deletions
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38
a2p.c
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@ -125,9 +125,47 @@ uint8_t a2p_iom_read(struct cpu_t *cpu, struct mem_t *mem, uint16_t addr) {
void a2p_iom_write(struct cpu_t *cpu, struct mem_t *mem, uint16_t addr, uint8_t b) {
struct a2p_t *a2p = (struct a2p_t*) mem->obj;
switch (addr) {
case EWM_A2P_SS_KBDSTRB:
a2p->key &= 0x7f;
break;
case EWM_A2P_SS_SCREEN_MODE_GRAPHICS:
a2p->screen_mode = EWM_A2P_SCREEN_MODE_GRAPHICS;
a2p->screen_dirty = true;
break;
case EWM_A2P_SS_SCREEN_MODE_TEXT:
a2p->screen_mode = EWM_A2P_SCREEN_MODE_TEXT;
a2p->screen_dirty = true;
break;
case EWM_A2P_SS_GRAPHICS_MODE_LGR:
a2p->screen_graphics_mode = EWM_A2P_SCREEN_GRAPHICS_MODE_LGR;
a2p->screen_dirty = true;
break;
case EWM_A2P_SS_GRAPHICS_MODE_HGR:
a2p->screen_graphics_mode = EWM_A2P_SCREEN_GRAPHICS_MODE_HGR;
a2p->screen_dirty = true;
break;
case EWM_A2P_SS_GRAPHICS_STYLE_FULL:
a2p->screen_graphics_style = EWM_A2P_SCREEN_GRAPHICS_STYLE_FULL;
a2p->screen_dirty = true;
break;
case EWM_A2P_SS_GRAPHICS_STYLE_MIXED:
a2p->screen_graphics_style = EWM_A2P_SCREEN_GRAPHICS_STYLE_MIXED;
a2p->screen_dirty = true;
break;
case EWM_A2P_SS_SCREEN_PAGE1:
a2p->screen_page = EWM_A2P_SCREEN_PAGE1;
a2p->screen_dirty = true;
break;
case EWM_A2P_SS_SCREEN_PAGE2:
a2p->screen_page = EWM_A2P_SCREEN_PAGE2;
a2p->screen_dirty = true;
break;
default:
printf("[A2P] Unexpected write at $%.4X\n", addr);
break;