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Remove unused PCjr keyboard code

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Allofich
2021-10-30 21:16:50 +09:00
parent 7906a093e9
commit c00d9383f2
3 changed files with 1 additions and 48 deletions
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2
include/callback.h
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@@ -26,7 +26,7 @@ typedef Bitu (*CallBack_Handler)(void);
extern CallBack_Handler CallBack_Handlers[];
enum { CB_RETN,CB_RETF,CB_RETF8,CB_IRET,CB_IRETD,CB_IRET_STI,CB_IRET_EOI_PIC1,
CB_IRQ0,CB_IRQ1,CB_IRQ1_BREAK,CB_IRQ9,CB_IRQ12,CB_IRQ12_RET,CB_IRQ6_PCJR,CB_MOUSE,
CB_IRQ0,CB_IRQ1,CB_IRQ1_BREAK,CB_IRQ9,CB_IRQ12,CB_IRQ12_RET,CB_MOUSE,
/*CB_INT28,*/CB_INT29,CB_INT16,CB_HOOKABLE,CB_TDE_IRET,CB_IPXESR,CB_IPXESR_RET,
CB_INT21,CB_INT13,CB_VESA_WAIT,CB_VESA_PM,CB_IRET_EOI_PIC2,CB_CPM,
CB_RETF_STI,CB_RETF_CLI};

25
src/cpu/callback.cpp
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@@ -545,31 +545,6 @@ Bitu CALLBACK_SetupExtra(Bitu callback, Bitu type, PhysPt physAddress, bool use_
phys_writeb(physAddress++,(uint8_t)0x1f); // pop ds
phys_writeb(physAddress++,(uint8_t)0xcf); //An IRET Instruction
return (use_cb?0x10:0x0c);
case CB_IRQ6_PCJR: // pcjr keyboard interrupt
phys_writeb(physAddress+0x00,(uint8_t)0x50); // push ax
phys_writew(physAddress+0x01,(uint16_t)0x60e4); // in al, 0x60
phys_writew(physAddress+0x03,(uint16_t)0xe03c); // cmp al, 0xe0
if (use_cb) {
phys_writew(physAddress+0x05,(uint16_t)0x0b74); // je skip
phys_writeb(physAddress+0x07,(uint8_t)0xFE); //GRP 4
phys_writeb(physAddress+0x08,(uint8_t)0x38); //Extra Callback instruction
phys_writew(physAddress+0x09,(uint16_t)callback); //The immediate word
physAddress+=4;
} else {
phys_writew(physAddress+0x05,(uint16_t)0x0774); // je skip
}
phys_writeb(physAddress+0x07,(uint8_t)0x1e); // push ds
phys_writew(physAddress+0x08,(uint16_t)0x406a); // push 0x0040
phys_writeb(physAddress+0x0a,(uint8_t)0x1f); // pop ds
phys_writew(physAddress+0x0b,(uint16_t)0x09cd); // int 9
phys_writeb(physAddress+0x0d,(uint8_t)0x1f); // pop ds
// jump here to (skip):
phys_writeb(physAddress+0x0e,(uint8_t)0xfa); // cli
phys_writew(physAddress+0x0f,(uint16_t)0x20b0); // mov al, 0x20
phys_writew(physAddress+0x11,(uint16_t)0x20e6); // out 0x20, al
phys_writeb(physAddress+0x13,(uint8_t)0x58); // pop ax
phys_writeb(physAddress+0x14,(uint8_t)0xcf); //An IRET Instruction
return (use_cb?0x19:0x15);
case CB_MOUSE:
phys_writew(physAddress+0x00,(uint16_t)0x07eb); // jmp i33hd
physAddress+=9;

22
src/ints/bios_keyboard.cpp
View File

@@ -1520,26 +1520,4 @@ void BIOS_SetupKeyboard(void) {
// out 0x20, al
// pop ax
// iret
if (machine==MCH_PCJR) {
call_irq6=CALLBACK_Allocate();
CALLBACK_Setup(call_irq6,NULL,CB_IRQ6_PCJR,"PCJr kb irq");
RealSetVec(0x0e,CALLBACK_RealPointer(call_irq6));
// pseudocode for CB_IRQ6_PCJR:
// push ax
// in al, 0x60
// cmp al, 0xe0
// je skip
// push ds
// push 0x40
// pop ds
// int 0x09
// pop ds
// label skip:
// cli
// mov al, 0x20
// out 0x20, al
// pop ax
// iret
}
}