mirror of
https://github.com/JorjBauer/aiie.git
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VBL interrupts work; roughing in physical mouse
This commit is contained in:
Jorj Bauer
parent
3a254f83f1
commit
b09df8e5f9
@ -136,6 +136,7 @@ void AppleVM::cpuMaintenance(int64_t cycles)
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keyboard->maintainKeyboard(cycles);
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disk6->maintenance(cycles);
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mouse->maintainMouse(cycles);
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}
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void AppleVM::Reset()
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225
apple/mouse.cpp
225
apple/mouse.cpp
@ -1,9 +1,31 @@
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#include "mouse.h"
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#include <string.h>
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#include "globals.h"
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#include "mouse-rom.h"
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enum {
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SW_R_HOMEMOUSE = 0x08,
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SW_R_POSMOUSE = 0x09,
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SW_R_CLEARMOUSE = 0x0A,
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SW_R_READMOUSE = 0x0B,
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SW_R_INITMOUSE = 0x0C,
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SW_W_CLAMPMOUSE = 0x0D,
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SW_R_SERVEMOUSE = 0x0E,
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SW_W_SETMOUSE = 0x0F
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};
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enum {
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ST_MOUSEENABLE = 1,
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ST_INTMOUSE = 2,
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ST_INTBUTTON = 4,
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ST_INTVBL = 8
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};
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Mouse::Mouse()
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{
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status = 0;
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interruptsTriggered = 0;
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}
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Mouse::~Mouse()
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@ -26,17 +48,82 @@ void Mouse::Reset()
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uint8_t Mouse::readSwitches(uint8_t s)
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{
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switch (s) {
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case SW_R_HOMEMOUSE:
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printf("unimplemented SW_R_HOMEMOUSE\n");
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/* physical mouse X = $578/$478;
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* physical mouse Y = $5f8/$4f8 */
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break;
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case SW_R_POSMOUSE:
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printf("unimplemented SW_R_POSMOUSE\n");
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/* physical mouse X = $578+4/$478+4;
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* physical mouse Y + $5F8+4/$4f8+4 */
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break;
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case SW_R_CLEARMOUSE:
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g_ram.writeByte(0x578+4, 0);
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g_ram.writeByte(0x478+4, 0);
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g_ram.writeByte(0x5F8+4, 0);
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g_ram.writeByte(0x4F8+4, 0);
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/* physical mouse X = Y = 0 */
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break;
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case SW_R_READMOUSE:
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printf("unimplemented SW_R_READMOUSE\n");
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// FIXME: read from physical mouse and write to:
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g_ram.writeByte(0x578+4, 0); // high X
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g_ram.writeByte(0x478+4, 0); // low X
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g_ram.writeByte(0x5F8+4, 0); // high Y
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g_ram.writeByte(0x4F8+4, 0); // low Y
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break;
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case SW_R_INITMOUSE:
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// Set clamp to (0,0) - (1023,1023)
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g_ram.writeByte(0x578, 0); // high of lowclamp
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g_ram.writeByte(0x478, 0); // low of lowclamp
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g_ram.writeByte(0x5F8, 0x03); // high of highclamp
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g_ram.writeByte(0x4F8, 0xFF); // low of highclamp
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printf("unimplemented SW_R_INITMOUSE\n");
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/* physicalMouse->setClamp(XCLAMP, 0, 1023);
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* physicalMouse->setClamp(YCLAMP, 0, 1023); */
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break;
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case SW_R_SERVEMOUSE:
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g_ram.writeByte(0x778+4, interruptsTriggered);
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g_ram.writeByte(0x6B8+4, interruptsTriggered); // hack to appease ROM
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interruptsTriggered = 0;
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break;
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default:
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printf("mouse: unknown switch read 0x%X\n", s);
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};
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return 0xFF;
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}
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void Mouse::writeSwitches(uint8_t s, uint8_t v)
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{
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printf("unknown switch 0x%X\n", s);
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switch (s) {
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case SW_W_CLAMPMOUSE:
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{
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uint16_t lowval = (g_ram.readByte(0x578) << 8) | (g_ram.readByte(0x478));
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uint16_t highval = (g_ram.readByte(0x5F8) << 8) | (g_ram.readByte(0x4F8));
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if (v) {
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// Y is clamping
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/* physicalMouse->setClamp(YCLAMP, lowval, highval); */
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} else {
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// X is clamping
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/* physicalMouse->setClamp(XCLAMP, lowval, highval); */
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}
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printf("unimplemented SW_W_CLAMPMOUSE [0x%X]\n", v);
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}
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break;
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case SW_W_SETMOUSE:
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status = v;
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break;
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default:
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printf("mouse: unknown switch write 0x%X\n", s);
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break;
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}
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}
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void Mouse::loadROM(uint8_t *toWhere)
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{
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/* ROM Disassembly:
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/* Actual mouse ROM Disassembly:
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C400- 2C 58 FF BIT $FF58 ; test bits in FF58 w/ A
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C403- 70 1B BVS $C420 ; V will contain bit 6 from $FF58, which should be $20 on boot-up
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C405- 38 SEC
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@ -149,16 +236,16 @@ C46F- B0 3F BCS $C4B0 ; RTS if A >= 0x10
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C471- 99 82 C0 STA $C082,Y ; LC RAM bank 2, read ROM, wr-protect RAM
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C474- 60 RTS
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; ServeMouse
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C475- 48 PHA
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C475- 48 PHA ; save A
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C476- 18 CLC
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C477- 90 39 BCC $C4B2 ; always branches
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C477- 90 39 BCC $C4B2 ; always branches
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; ServeMouse cleanup and exit
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C479- 99 83 C0 STA $C083,Y ; LC RAM bank 2, read RAM
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C47C- BD B8 06 LDA $06B8,X
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C47C- BD B8 06 LDA $06B8,X ; apparently this is where the new status wound up, also $7f8 + <slot#>
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C47F- 29 0E AND #$0E
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C481- D0 01 BNE $C484
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C481- D0 01 BNE $C484 ; if the interrupt bits don't show it was a mouse interrupt, set error (C) before returning
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C483- 38 SEC
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C484- 68 PLA
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C484- 68 PLA ; restore A
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C485- 60 RTS
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; ClampMouse
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C486- C9 02 CMP #$02
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@ -216,39 +303,102 @@ C4CC- A9 03 LDA #$03
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C4CE- 18 CLC
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C4CF- 90 A8 BCC $C479 ; always branches
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... but the version below is patched so it uses soft switches to call
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back here.
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SETMOUSE:
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C471- 8D CF C0 STA $C0CF ; use soft switch 0xF to handle it
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60 RTS
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Patch: C471 from 99 82 C0 60 => 8D CF C0 60
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SERVEMOUSE @ $C4B2:
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78 SEI
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AD CE C0 LDA $C0CE ; use soft switch 0xE (read) to trigger this - expect ne\
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w value to be placed in $7f8+4 and $6b8+4
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A2 04 LDX #$04 ; our slot number, for cleanup code
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18 CLC
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90 C1 BCC $C47C
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Patch: C4B2 from 08 A5 00 48 A9 60 85 00 78 =>
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78 AD CE C0 A2 04 18 90 C1
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READMOUSE
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C48E- AD CB C0 LDA $C04B ; soft switch 0x0B for readmouse
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18 CLC
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60 RTS
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Patch: from A9 04 99 83 C0 =>
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AD CB C0 18 60
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CLEARMOUSE
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C49F- AD CA C0 LDA $C04A ; soft switch 0x0A for clearmouse
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18 CLC
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60 RTS
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Patch: from EA A9 05 D0 F6 =>
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AD CA C0 18 60
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POSMOUSE
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C4a4- AD C9 C0 LDA $C049 ; soft switch 0x09 for posmouse
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18 CLC
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60 RTS
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Patch: from EA A9 06 D0 F1 =>
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AD C9 C0 18 60
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CLAMPMOUSE
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C48A- 8D CD C0 STA $C04D ; use write to soft switch 0x0D to trigger clamp
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60 RTS
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Patch: from 99 83 C0 60 => 8D CD C0 60
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HOMEMOUSE
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C4A9- AD C8 C0 LDA $c048 ; soft switch 0x08 for homemouse (read)
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18 CLC
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60 RTS
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Patch: from EA A9 07 D0 EC => AD C8 C0 18 60
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INITMOUSE
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C498- AD CC C0 LDA $C04C ; soft switch 0x0C read for initmouse
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18 CLC
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60 RTS
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Patch: from A9 02 99 83 C0 => AD CC C0 18 60
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*/
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uint8_t rom[256] = { 0x2c, 0x58, 0xff, 0x70, 0x1B, 0x38, 0x90, 0x18,
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uint8_t rom[256] = { 0x2c, 0x58, 0xff, 0x70, 0x1B, 0x38, 0x90, 0x18, // C400
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0xb8, 0x50, 0x15, 0x01, 0x20, 0xae, 0xae, 0xae,
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0xae, 0x00, 0x6d, 0x75, 0x8e, 0x9f, 0xa4, 0x86,
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0xae, 0x00, 0x6d, 0x75, 0x8e, 0x9f, 0xa4, 0x86, // C410
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0xa9, 0x97, 0xae, 0xae, 0xae, 0xae, 0xae, 0xae,
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0x48, 0x98, 0x48, 0x8a, 0x48, 0x08, 0x78, 0x20,
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0x48, 0x98, 0x48, 0x8a, 0x48, 0x08, 0x78, 0x20, // C420
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0x58, 0xFF, 0xBA, 0xBD, 0x00, 0x01, 0xAA, 0x0A,
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0x0A, 0x0A, 0x0A, 0xA8, 0x28, 0x50, 0x0F, 0xA5,
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0x0A, 0x0A, 0x0A, 0xA8, 0x28, 0x50, 0x0F, 0xA5, // C430
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0x38, 0xd0, 0x0d, 0x8a, 0x45, 0x39, 0xd0, 0x08,
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0xa9, 0x05, 0x85, 0x38, 0xd0, 0x0b, 0xb0, 0x09,
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0xa9, 0x05, 0x85, 0x38, 0xd0, 0x0b, 0xb0, 0x09, // C440
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0x68, 0xaa, 0x68, 0xea, 0x68, 0x99, 0x80, 0xc0,
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0x60, 0x99, 0x81, 0xc0, 0x68, 0xbd, 0x38, 0x06,
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0x60, 0x99, 0x81, 0xc0, 0x68, 0xbd, 0x38, 0x06, // C450
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0xaa, 0x68, 0xa8, 0x68, 0xbd, 0x00, 0x02, 0x60,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // C460
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0x00, 0x00, 0x00, 0x00, 0x00, 0xc9, 0x10, 0xb0,
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0x3f, 0x99, 0x82, 0xc0, 0x60, 0x48, 0x18, 0x90,
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0x3f, 0x8D, 0xCF, 0xc0, 0x60, 0x48, 0x18, 0x90, // C470
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0x39, 0x99, 0x83, 0xc0, 0xbd, 0xb8, 0x06, 0x29,
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0x0E, 0xD0, 0x01, 0x38, 0x68, 0x60, 0xc9, 0x02,
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0xb0, 0x26, 0x99, 0x83, 0xc0, 0x60, 0xa9, 0x04,
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0x99, 0x83, 0xc0, 0x18, 0xea, 0xea, 0x60, 0xea,
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0xa9, 0x02, 0x99, 0x83, 0xc0, 0x18, 0x60, 0xea,
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0xa9, 0x05, 0xd0, 0xf6, 0xea, 0xa9, 0x06, 0xd0,
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0xf1, 0xea, 0xa9, 0x07, 0xd0, 0xec, 0xa2, 0x03,
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0x38, 0x60, 0x08, 0xa5, 0x00, 0x48, 0xa9, 0x60,
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0x85, 0x00, 0x78, 0x20, 0x00, 0x00, 0xba, 0x68,
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0x85, 0x00, 0xbd, 0x00, 0x01, 0x28, 0xaa, 0x0a,
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0x0E, 0xD0, 0x01, 0x38, 0x68, 0x60, 0xc9, 0x02, // C480
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0xb0, 0x26, 0x8D, 0xCD, 0xc0, 0x60, 0xAD, 0xCB,
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0xC0, 0x18, 0x60, 0x18, 0xea, 0xea, 0x60, 0xea, // C490
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0xAD, 0xCC, 0xC0, 0x18, 0x60, 0x18, 0x60, 0xAD,
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0xCA, 0xC0, 0x18, 0x60, 0xAD, 0xC9, 0xc0, 0x18, // C4A0
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0x60, 0xAD, 0xC8, 0xC0, 0x18, 0x60, 0xa2, 0x03,
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0x38, 0x60, 0x78, 0xad, 0xce, 0xc0, 0xa2, 0x04, // C4B0
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0x18, 0x90, 0xc1, 0x20, 0x00, 0x00, 0xba, 0x68,
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0x85, 0x00, 0xbd, 0x00, 0x01, 0x28, 0xaa, 0x0a, // C4C0
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0x0a, 0x0a, 0x0a, 0xa8, 0xa9, 0x03, 0x18, 0x90,
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0xa8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xa8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // C4D0
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // C4E0
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // C4F0
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0xff, 0xff, 0xff, 0xd6, 0xff, 0xff, 0xff, 0x01 };
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memcpy(toWhere, rom, 256);
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}
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@ -260,8 +410,29 @@ bool Mouse::hasExtendedRom()
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void Mouse::loadExtendedRom(uint8_t *toWhere, uint16_t byteOffset)
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{
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#if 0
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printf("loading extended rom for the mouse\n");
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for (int i=0; i<256; i++) {
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toWhere[i] = romData[i + byteOffset];
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}
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#endif
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}
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void Mouse::maintainMouse(int64_t cycleCount)
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{
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// static int64_t startTime = cycleCount;
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// Fake a 60Hz VBL in case we need it for our interrupts
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static int64_t nextInterruptTime = cycleCount + 17050;
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if ( (status & ST_MOUSEENABLE) &&
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(status & ST_INTVBL) ) {
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if (cycleCount >= nextInterruptTime) {
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g_cpu->irq();
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interruptsTriggered |= ST_INTVBL;
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nextInterruptTime += 17050;
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}
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}
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}
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@ -26,6 +26,12 @@ class Mouse : public Slot {
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virtual bool hasExtendedRom();
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virtual void loadExtendedRom(uint8_t *toWhere, uint16_t byteOffset);
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void maintainMouse(int64_t cycleCount);
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private:
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uint8_t status;
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uint8_t interruptsTriggered;
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};
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#endif
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14
physicalmouse.h
Normal file
14
physicalmouse.h
Normal file
@ -0,0 +1,14 @@
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#ifndef __PHYSICALMOUSE_H
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#define __PHYSICALMOUSE_H
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#include <stdint.h>
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class PhysicalMouse {
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public:
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PhysicalMouse() {}
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virtual ~PhysicalMouse() {};
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virtual void maintainMouse() = 0;
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};
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#endif
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@ -286,7 +286,8 @@ void runMaintenance(uint32_t now)
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static uint32_t nextRuntime = 0;
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if (now >= nextRuntime) {
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nextRuntime = now + 100000; // FIXME: what's a good time here? 1/10 sec?
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// Run maintenance at 60 Hz because the mouse will need it
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nextRuntime = now + 16667;
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if (!resetButtonDebouncer.read()) {
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// This is the BIOS interrupt. Wait for it to clear and process it.
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@ -297,6 +298,7 @@ void runMaintenance(uint32_t now)
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}
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if (!g_biosInterrupt) {
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g_mouse->maintainMouse();
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g_keyboard->maintainKeyboard();
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usb.maintain();
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}
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@ -48,8 +48,8 @@ void VMRam::writeByte(uint32_t addr, uint8_t value)
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uint8_t *VMRam::memPtr(uint32_t addr)
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{
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printf("Asked for preallocated RAM pointer at 0x%X\n", addr);
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printf("Base is 0x%llX\n", (unsigned long long) preallocatedRam);
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// printf("Asked for preallocated RAM pointer at 0x%X\n", addr);
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// printf("Base is 0x%llX\n", (unsigned long long) preallocatedRam);
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return &preallocatedRam[addr];
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}
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