diff options
Diffstat (limited to 'source')
| -rw-r--r-- | source/monitor.c | 91 |
1 files changed, 51 insertions, 40 deletions
diff --git a/source/monitor.c b/source/monitor.c index 6f0fa05..773f7c2 100644 --- a/source/monitor.c +++ b/source/monitor.c @@ -41,9 +41,18 @@ typedef enum DISPLAY_IY, DISPLAY_BC, DISPLAY_DE, + DISPLAY_PC, DISPLAY_TYPE_COUNT } MemDisplayType; +typedef enum +{ + MODE_CPU_STATE, + MODE_HEX, + MODE_ASSEM, + MODE_TYPE_COUNT +} DisplayModeType; + /* ---------------------------------------- STATIC INTERFACES */ @@ -107,41 +116,24 @@ static void DisplayRunningState(int running) } -static void DisplayCPU(Z80 *cpu, int stepped) +static void DisplayCPU(Z80 *cpu) { static const char *flag_char = "SZ5H3PNC"; - static Z80Word prev_pc[8]; Z80Word tmp; int f; char flags[]="--------"; + tmp = cpu->PC; + /* Display disassembly */ - for(f=0;f<8;f++) + for(f=0;f<17;f++) { - tmp = prev_pc[f]; - /* These may seem a bit convuluted, but there's no point being at home to Mr Undefined Behaviour */ - TM_printf(1,f,"%4.4x:",tmp); + TM_printf(0,f,"%c%4.4x:",f==0 ? '>':' ',tmp); TM_Put(7,f,Z80Disassemble(cpu,&tmp)); - - if (stepped && f) - { - prev_pc[f-1] = prev_pc[f]; - } - } - - prev_pc[7] = tmp = cpu->PC; - - TM_printf(0,8,">%4.4x:",tmp); - TM_Put(7,8,Z80Disassemble(cpu,&tmp)); - - for(f=0;f<8;f++) - { - TM_printf(1,9+f,"%4.4x:",tmp); - TM_Put(7,9+f,Z80Disassemble(cpu,&tmp)); } /* Display process state @@ -170,7 +162,7 @@ static void DisplayCPU(Z80 *cpu, int stepped) } -static void DisplayMem(Z80 *cpu, MemDisplayType disp, Z80Word addr) +static void DisplayMem(Z80 *cpu, MemDisplayType disp, Z80Word addr, int as_hex) { static const char *label[]= { @@ -180,7 +172,8 @@ static void DisplayMem(Z80 *cpu, MemDisplayType disp, Z80Word addr) "SP", "IY", "BC", - "DE" + "DE", + "PC" }; int x,y; @@ -211,19 +204,34 @@ static void DisplayMem(Z80 *cpu, MemDisplayType disp, Z80Word addr) addr = cpu->DE.w; break; + case DISPLAY_PC: + addr = cpu->PC; + break; + default: break; } TM_printf(0,0,"%s: %4.4x",label[disp],addr); - for(y=0;y<18;y++) + if (as_hex) { - TM_printf(0,y+2,"%4.4x:",addr); + for(y=0;y<20;y++) + { + TM_printf(0,y+2,"%4.4x:",addr); - for(x=0;x<8;x++) + for(x=0;x<8;x++) + { + TM_printf(6+x*3,y+2,"%2.2x",ZX81ReadDisassem(cpu,addr++)); + } + } + } + else + { + for(y=0;y<20;y++) { - TM_printf(6+x*3,y+2,"%2.2x",ZX81ReadDisassem(cpu,addr++)); + TM_printf(0,y+2,"%4.4x:",addr); + TM_Put(7,y+2,Z80Disassemble(cpu,&addr)); } } } @@ -237,8 +245,7 @@ void MachineCodeMonitor(Z80 *cpu) static MemDisplayType mem_display = DISPLAY_ADDR; int done = FALSE; int running = FALSE; - int cpu_display = TRUE; - int stepped = FALSE; + DisplayModeType display_mode = MODE_CPU_STATE; int key; SoftKey soft_key; @@ -255,16 +262,21 @@ void MachineCodeMonitor(Z80 *cpu) TM_Cls(); DisplayRunningState(running); - if (cpu_display) + switch(display_mode) { - DisplayCPU(cpu,stepped); + case MODE_CPU_STATE: + DisplayCPU(cpu); + break; + case MODE_HEX: + DisplayMem(cpu,mem_display,display_address,TRUE); + break; + case MODE_ASSEM: + DisplayMem(cpu,mem_display,display_address,FALSE); + break; + default: + TM_Put(0,0,"Oops!"); + break; } - else - { - DisplayMem(cpu,mem_display,display_address); - } - - stepped = FALSE; do { @@ -298,7 +310,7 @@ void MachineCodeMonitor(Z80 *cpu) if (key & KEY_SELECT) { - cpu_display = !cpu_display; + display_mode = (display_mode+1) % MODE_TYPE_COUNT; } if (key & KEY_L) @@ -333,7 +345,6 @@ void MachineCodeMonitor(Z80 *cpu) if (running || (key & KEY_A)) { Z80SingleStep(cpu); - stepped = TRUE; } } |