RaySollium99/picodrive
1
0
Fork 0
mirror of https://github.com/RaySollium99/picodrive.git synced 2025-09-05 07:17:45 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

sms: add pause support

Browse source
This commit is contained in:
notaz 2013-08-31 02:23:57 +03:00
parent c7074ddb02
commit 835122bc0c
4 changed files with 48 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

7
pico/pico_int.h
View file

@ -174,6 +174,8 @@ extern struct DrZ80 drZ80;
#define z80_run(cycles) ((cycles) - DrZ80Run(&drZ80, cycles))
#define z80_run_nr(cycles) DrZ80Run(&drZ80, cycles)
#define z80_int() drZ80.Z80_IRQ = 1
#define z80_int() drZ80.Z80_IRQ = 1
#define z80_nmi() drZ80.Z80IF |= 8
#define z80_cyclesLeft drZ80.cycles
#define z80_pc() (drZ80.Z80PC - drZ80.Z80PC_BASE)
@ -184,6 +186,7 @@ extern struct DrZ80 drZ80;
#define z80_run(cycles) Cz80_Exec(&CZ80, cycles)
#define z80_run_nr(cycles) Cz80_Exec(&CZ80, cycles)
#define z80_int() Cz80_Set_IRQ(&CZ80, 0, HOLD_LINE)
#define z80_nmi() Cz80_Set_IRQ(&CZ80, IRQ_LINE_NMI, 0)
#define z80_cyclesLeft (CZ80.ICount - CZ80.ExtraCycles)
#define z80_pc() Cz80_Get_Reg(&CZ80, CZ80_PC)
@ -193,6 +196,7 @@ extern struct DrZ80 drZ80;
#define z80_run(cycles) (cycles)
#define z80_run_nr(cycles)
#define z80_int()
#define z80_nmi()
#endif
@ -313,7 +317,8 @@ struct PicoMS
{
unsigned char carthw[0x10];
unsigned char io_ctl;
unsigned char pad[0x4f];
unsigned char nmi_state;
unsigned char pad[0x4e];
};
// some assembly stuff depend on these, do not touch!

7
pico/sms.c
View file

@ -11,7 +11,6 @@
* - remaining status flags (OVR/COL)
* - RAM support in mapper
* - region support
* - Pause button (NMI)
* - SN76496 DAC-like usage
* - H counter
*/
@ -256,8 +255,14 @@ void PicoFrameMS(void)
int skip = PicoSkipFrame;
int lines_vis = 192;
int hint; // Hint counter
int nmi;
int y;
nmi = (PicoPad[0] >> 7) & 1;
if (!Pico.ms.nmi_state && nmi)
z80_nmi();
Pico.ms.nmi_state = nmi;
PicoFrameStartMode4();
hint = pv->reg[0x0a];