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Added stack pointer accessors to system device

This commit is contained in:
neauoire 2023-08-19 07:36:26 -07:00
parent c6bd7f06a7
commit 2e2f8df0e0
4 changed files with 23 additions and 4 deletions
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16
src/devices/system.c
View File

@ -116,6 +116,16 @@ system_init(Uxn *u, Uint8 *ram, char *rom)
/* IO */ /* IO */
Uint8
system_dei(Uxn *u, Uint8 addr)
{
switch(addr) {
case 0x4: return u->wst.ptr;
case 0x5: return u->rst.ptr;
default: return u->dev[addr];
}
}
void void
system_deo(Uxn *u, Uint8 *d, Uint8 port) system_deo(Uxn *u, Uint8 *d, Uint8 port)
{ {
@ -134,6 +144,12 @@ system_deo(Uxn *u, Uint8 *d, Uint8 port)
ram[dst + (Uint16)(b_addr + i)] = ram[src + (Uint16)(a_addr + i)]; ram[dst + (Uint16)(b_addr + i)] = ram[src + (Uint16)(a_addr + i)];
} }
break; break;
case 0x4:
u->wst.ptr = d[4];
break;
case 0x5:
u->rst.ptr = d[5];
break;
case 0xe: case 0xe:
system_inspect(u); system_inspect(u);
break; break;

7
src/devices/system.h
View File

@ -9,9 +9,9 @@ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE. WITH REGARD TO THIS SOFTWARE.
*/ */
#define SYSTEM_VERSION 1 #define SYSTEM_VERSION 2
#define SYSTEM_DEIMASK 0x0000 #define SYSTEM_DEIMASK 0x0030
#define SYSTEM_DEOMASK 0xff08 #define SYSTEM_DEOMASK 0xff38
#define RAM_PAGES 0x10 #define RAM_PAGES 0x10
@ -24,4 +24,5 @@ int system_version(Uxn *u, char *emulator, char *date);
int system_error(char *msg, const char *err); int system_error(char *msg, const char *err);
int system_init(Uxn *u, Uint8 *ram, char *rom); int system_init(Uxn *u, Uint8 *ram, char *rom);
Uint8 system_dei(Uxn *u, Uint8 addr);
void system_deo(Uxn *u, Uint8 *d, Uint8 port); void system_deo(Uxn *u, Uint8 *d, Uint8 port);

1
src/uxn11.c
View File

@ -49,6 +49,7 @@ Uint8
emu_dei(Uxn *u, Uint8 addr) emu_dei(Uxn *u, Uint8 addr)
{ {
switch(addr & 0xf0) { switch(addr & 0xf0) {
case 0x00: return system_dei(u, addr);
case 0x20: return screen_dei(u, addr); case 0x20: return screen_dei(u, addr);
case 0xc0: return datetime_dei(u, addr); case 0xc0: return datetime_dei(u, addr);
} }

3
src/uxncli.c
View File

@ -24,6 +24,7 @@ Uint8
emu_dei(Uxn *u, Uint8 addr) emu_dei(Uxn *u, Uint8 addr)
{ {
switch(addr & 0xf0) { switch(addr & 0xf0) {
case 0x00: return system_dei(u, addr);
case 0xc0: return datetime_dei(u, addr); case 0xc0: return datetime_dei(u, addr);
} }
return u->dev[addr]; return u->dev[addr];
@ -73,7 +74,7 @@ main(int argc, char **argv)
system_connect(&u, 0xc, DATETIME_VERSION, DATETIME_DEIMASK, DATETIME_DEOMASK); system_connect(&u, 0xc, DATETIME_VERSION, DATETIME_DEIMASK, DATETIME_DEOMASK);
/* Read flags */ /* Read flags */
if(argv[i][0] == '-' && argv[i][1] == 'v') if(argv[i][0] == '-' && argv[i][1] == 'v')
return system_version(&u, "Uxncli - Console Varvara Emulator", "17 Aug 2023"); return system_version(&u, "Uxncli - Console Varvara Emulator", "19 Aug 2023");
if(!system_init(&u, (Uint8 *)calloc(0x10000 * RAM_PAGES, sizeof(Uint8)), argv[i++])) if(!system_init(&u, (Uint8 *)calloc(0x10000 * RAM_PAGES, sizeof(Uint8)), argv[i++]))
return system_error("Init", "Failed to initialize uxn."); return system_error("Init", "Failed to initialize uxn.");
/* Game Loop */ /* Game Loop */