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gr-sim: add soft-switch support

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This commit is contained in:
Vince Weaver 2017-05-17 15:47:20 -04:00
parent 37cd697d77
commit 5b8bc29f5b
3 changed files with 109 additions and 10 deletions
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106
gr-sim/gr-sim.c
View File

@ -46,6 +46,52 @@ unsigned char a,y,x;
#define TEMP 0xFA
/* Soft Switches */
#define TXTCLR 0xc050
#define TXTSET 0xc051
#define MIXCLR 0xc052
#define MIXSET 0xc053
#define LOWSCR 0xc054
#define HISCR 0xc055
#define LORES 0xc056
#define HIRES 0xc057
static int text_mode=1;
static int text_page_1=1;
static int hires_on=0;
static int mixed_graphics=1;
static void soft_switch(unsigned short address) {
switch(address) {
case TXTCLR: // $c050
text_mode=0;
break;
case TXTSET: // $c051
text_mode=1;
break;
case MIXCLR: // $c052
mixed_graphics=0;
break;
case MIXSET: // $c053
mixed_graphics=1;
break;
case LOWSCR: // $c054
text_page_1=1;
break;
case LORES: // $c056
hires_on=0;
break;
case HIRES: // $c057
hires_on=1;
break;
default:
fprintf(stderr,"Unknown soft switch %x\n",address);
break;
}
}
static SDL_Surface *sdl_screen=NULL;
int grsim_input(void) {
@ -177,14 +223,28 @@ int grsim_update(void) {
t_pointer=((Uint32 *)sdl_screen->pixels);
for(y=0;y<YSIZE;y++) {
for(j=0;j<PIXEL_Y_SCALE;j++) {
for(x=0;x<XSIZE;x++) {
for(i=0;i<PIXEL_X_SCALE;i++) {
*t_pointer=color[scrn(x,y)];
t_pointer++;
if (text_mode) {
for(y=0;y<YSIZE;y++) {
for(j=0;j<PIXEL_Y_SCALE;j++) {
for(x=0;x<XSIZE;x++) {
for(i=0;i<PIXEL_X_SCALE;i++) {
*t_pointer=color[15];
t_pointer++;
}
}
}
}
}
else {
for(y=0;y<YSIZE;y++) {
for(j=0;j<PIXEL_Y_SCALE;j++) {
for(x=0;x<XSIZE;x++) {
for(i=0;i<PIXEL_X_SCALE;i++) {
*t_pointer=color[scrn(x,y)];
t_pointer++;
}
}
}
}
}
@ -398,13 +458,13 @@ clrsc3:
int gr(void) {
// F390
// LDA SW.LORES
// LDA SW.MIXSET
soft_switch(LORES); // LDA SW.LORES
soft_switch(MIXSET); // LDA SW.MIXSET
//JMP MON.SETGR
// FB40
// LDA TXTCLR
// LDA MIXSET
soft_switch(TXTCLR); // LDA TXTCLR
soft_switch(MIXSET); // LDA MIXSET
clrtop();
@ -660,3 +720,29 @@ int gr_copy(short source, short dest) {
return 0;
}
int text(void) {
// FB36
soft_switch(LOWSCR); // LDA LOWSCR ($c054)
soft_switch(TXTSET); // LDA TXTSET ($c051);
a=0;
setwnd();
return 0;
}
int basic_htab(int x) {
return 0;
}
int basic_vtab(int y) {
return 0;
}
int basic_print(char *string) {
return 0;
}

5
gr-sim/gr-sim.h
View File

@ -13,3 +13,8 @@ int grsim_unrle(unsigned char *rle_data, int address);
int home(void);
int grsim_put_sprite(unsigned char *sprite_data, int xpos, int ypos);
int gr_copy(short source, short dest);
int text(void);
int basic_htab(int x);
int basic_vtab(int y);
int basic_print(char *string);

8
gr-sim/text.c
View File

@ -12,6 +12,14 @@ int main(int argc, char **argv) {
home();
text();
basic_htab(10);
basic_vtab(10);
basic_print("HELLO WORLD!\n");
while(1) {
grsim_update();