/*
* non-startup assembly-language assist
*/
#include "mem.h"
#include "/sys/src/boot/pc/x16.h"
#undef DELAY
#define PADDR(a) ((a) & ~KZERO)
#define KADDR(a) (KZERO|(a))
/*
* Some machine instructions not handled by 8[al].
*/
#define OP16 BYTE $0x66
#define DELAY BYTE $0xEB; BYTE $0x00 /* JMP .+2 */
#define CPUID BYTE $0x0F; BYTE $0xA2 /* CPUID, argument in AX */
#define WRMSR BYTE $0x0F; BYTE $0x30 /* WRMSR, argument in AX/DX (lo/hi) */
#define RDTSC BYTE $0x0F; BYTE $0x31 /* RDTSC, result in AX/DX (lo/hi) */
#define RDMSR BYTE $0x0F; BYTE $0x32 /* RDMSR, result in AX/DX (lo/hi) */
#define HLT BYTE $0xF4
#define INVLPG BYTE $0x0F; BYTE $0x01; BYTE $0x39 /* INVLPG (%ecx) */
#define WBINVD BYTE $0x0F; BYTE $0x09
/*
* Macros for calculating offsets within the page directory base
* and page tables. Note that these are assembler-specific hence
* the '<<2'.
*/
#define PDO(a) (((((a))>>22) & 0x03FF)<<2)
#define PTO(a) (((((a))>>12) & 0x03FF)<<2)
TEXT pagingoff(SB), $0
DELAY /* JMP .+2 */
/*
* use a jump to an absolute location to get the PC out of
* KZERO. first establishes double mapping of first few MB.
*/
MOVL CR3, CX /* load address of PDB */
ADDL $KZERO, CX
MOVL PDO(KZERO)(CX), DX /* double-map KZERO at 0 */
MOVL DX, PDO(0)(CX)
MOVL CR3, CX
MOVL CX, CR3 /* load and flush the mmu */
MOVL entry+0(FP), DX
LEAL _nopaging-KZERO(SB),AX
JMP* AX /* jump to identity-map */
TEXT _nopaging(SB), $0
DELAY /* JMP .+2 */
/* switch to low stack */
MOVL SP, AX
MOVL $RMSTACK, SP
// PUSHL AX
/* change gdt to physical pointer */
MOVL _gdtptr16r-KZERO(SB), GDTR
/*
* turn off paging
*/
MOVL CR0,AX
ANDL $~PG, AX
MOVL AX,CR0
DELAY /* JMP .+2 */
MOVL $_stop32pg-KZERO(SB), AX
JMP* AX /* forward into the past */
TEXT _stop32pg(SB), $0
MOVL multibootheader-KZERO(SB), BX /* multiboot data pointer */
MOVL $0x2badb002, AX /* multiboot magic */
JMP* DX /* into the loaded kernel */
_idle:
HLT
JMP _idle
/*
* BIOS32.
*/
TEXT bios32call(SB), $0
MOVL ci+0(FP), BP
MOVL 0(BP), AX
MOVL 4(BP), BX
MOVL 8(BP), CX
MOVL 12(BP), DX
MOVL 16(BP), SI
MOVL 20(BP), DI
PUSHL BP
MOVL 12(SP), BP /* ptr */
BYTE $0xFF; BYTE $0x5D; BYTE $0x00 /* CALL FAR 0(BP) */
POPL BP
MOVL DI, 20(BP)
MOVL SI, 16(BP)
MOVL DX, 12(BP)
MOVL CX, 8(BP)
MOVL BX, 4(BP)
MOVL AX, 0(BP)
XORL AX, AX
JCC _bios32xxret
INCL AX
_bios32xxret:
RET
TEXT cgapost2(SB), 0, $16
MOVL $0xb8000,CX
MOVL CX,(SP)
CALL ,kaddr+0(SB)
MOVL code+0(FP),BP
MOVL AX,BX
MOVL BP,CX
SARL $4,CX
ANDL $15,CX
MOVBLZX hex(SB)(CX*1),AX
MOVB AX,3996(BX)
MOVB $7,3997(BX)
MOVL BP,DX
ANDL $15,DX
MOVBLZX hex(SB)(DX*1),CX
MOVB CX,3998(BX)
MOVB $7,3999(BX)
RET
/*
* Read/write various system registers.
* CR4 and the 'model specific registers' should only be read/written
* after it has been determined the processor supports them
*/
TEXT ltr(SB), $0 /* TR - task register */
MOVL tptr+0(FP), AX
MOVW AX, TASK
RET
TEXT invlpg(SB), $0
/* 486+ only */
MOVL va+0(FP), CX
INVLPG
RET
TEXT wbinvd(SB), $0
WBINVD
RET
/*
* stub for:
* time stamp counter; low-order 32 bits of 64-bit cycle counter
* Runs at fasthz/4 cycles per second (m->clkin>>3)
*/
TEXT lcycles(SB),1,$0
RDTSC
RET
/*
* Try to determine the CPU type which requires fiddling with EFLAGS.
* If the Id bit can be toggled then the CPUID instruction can be used
* to determine CPU identity and features. First have to check if it's
* a 386 (Ac bit can't be set). If it's not a 386 and the Id bit can't be
* toggled then it's an older 486 of some kind.
*
* cpuid(fun, regs[4]);
*/
TEXT cpuid(SB), $0
MOVL $0x240000, AX
PUSHL AX
POPFL /* set Id|Ac */
PUSHFL
POPL BX /* retrieve value */
MOVL $0, AX
PUSHL AX
POPFL /* clear Id|Ac, EFLAGS initialised */
PUSHFL
POPL AX /* retrieve value */
XORL BX, AX
TESTL $0x040000, AX /* Ac */
JZ _cpu386 /* can't set this bit on 386 */
TESTL $0x200000, AX /* Id */
JZ _cpu486 /* can't toggle this bit on some 486 */
MOVL fn+0(FP), AX
CPUID
JMP _cpuid
_cpu486:
MOVL $0x400, AX
JMP _maybezapax
_cpu386:
MOVL $0x300, AX
_maybezapax:
CMPL fn+0(FP), $1
JE _zaprest
XORL AX, AX
_zaprest:
XORL BX, BX
XORL CX, CX
XORL DX, DX
_cpuid:
MOVL regs+4(FP), BP
MOVL AX, 0(BP)
MOVL BX, 4(BP)
MOVL CX, 8(BP)
MOVL DX, 12(BP)
RET
/*
* Floating point.
* Note: the encodings for the FCLEX, FINIT, FSAVE, FSTCW, FSENV and FSTSW
* instructions do NOT have the WAIT prefix byte (i.e. they act like their
* FNxxx variations) so WAIT instructions must be explicitly placed in the
* code as necessary.
*/
#define FPOFF(l) ;\
MOVL CR0, AX ;\
ANDL $0xC, AX /* EM, TS */ ;\
CMPL AX, $0x8 ;\
JEQ l ;\
WAIT ;\
l: ;\
MOVL CR0, AX ;\
ANDL $~0x4, AX /* EM=0 */ ;\
ORL $0x28, AX /* NE=1, TS=1 */ ;\
MOVL AX, CR0
#define FPON ;\
MOVL CR0, AX ;\
ANDL $~0xC, AX /* EM=0, TS=0 */ ;\
MOVL AX, CR0
TEXT fpoff(SB), $0 /* disable */
FPOFF(l1)
RET
TEXT fpinit(SB), $0 /* enable and init */
FPON
FINIT
WAIT
/* setfcr(FPPDBL|FPRNR|FPINVAL|FPZDIV|FPOVFL) */
/* note that low 6 bits are masks, not enables, on this chip */
PUSHW $0x0232
FLDCW 0(SP)
POPW AX
WAIT
RET
/*
* Test-And-Set
*/
TEXT tas(SB), $0
MOVL $0xDEADDEAD, AX
MOVL lock+0(FP), BX
XCHGL AX, (BX) /* lock->key */
RET
TEXT _xinc(SB), $0 /* void _xinc(long*); */
MOVL l+0(FP), AX
LOCK; INCL 0(AX)
RET
TEXT _xdec(SB), $0 /* long _xdec(long*); */
MOVL l+0(FP), BX
XORL AX, AX
LOCK; DECL 0(BX)
JLT _xdeclt
JGT _xdecgt
RET
_xdecgt:
INCL AX
RET
_xdeclt:
DECL AX
RET
TEXT xchgw(SB), $0
MOVL v+4(FP), AX
MOVL p+0(FP), BX
XCHGW AX, (BX)
RET
TEXT cmpswap486(SB), $0
MOVL addr+0(FP), BX
MOVL old+4(FP), AX
MOVL new+8(FP), CX
LOCK
BYTE $0x0F; BYTE $0xB1; BYTE $0x0B /* CMPXCHGL CX, (BX) */
JNZ didnt
MOVL $1, AX
RET
didnt:
XORL AX,AX
RET
TEXT mul64fract(SB), $0
/*
* Multiply two 64-bit number s and keep the middle 64 bits from the 128-bit result
* See ../port/tod.c for motivation.
*/
MOVL r+0(FP), CX
XORL BX, BX /* BX = 0 */
MOVL a+8(FP), AX
MULL b+16(FP) /* a1*b1 */
MOVL AX, 4(CX) /* r2 = lo(a1*b1) */
MOVL a+8(FP), AX
MULL b+12(FP) /* a1*b0 */
MOVL AX, 0(CX) /* r1 = lo(a1*b0) */
ADDL DX, 4(CX) /* r2 += hi(a1*b0) */
MOVL a+4(FP), AX
MULL b+16(FP) /* a0*b1 */
ADDL AX, 0(CX) /* r1 += lo(a0*b1) */
ADCL DX, 4(CX) /* r2 += hi(a0*b1) + carry */
MOVL a+4(FP), AX
MULL b+12(FP) /* a0*b0 */
ADDL DX, 0(CX) /* r1 += hi(a0*b0) */
ADCL BX, 4(CX) /* r2 += carry */
RET
/*
* label consists of a stack pointer and a PC
*/
TEXT gotolabel(SB), $0
MOVL label+0(FP), AX
MOVL 0(AX), SP /* restore sp */
MOVL 4(AX), AX /* put return pc on the stack */
MOVL AX, 0(SP)
MOVL $1, AX /* return 1 */
RET
TEXT setlabel(SB), $0
MOVL label+0(FP), AX
MOVL SP, 0(AX) /* store sp */
MOVL 0(SP), BX /* store return pc */
MOVL BX, 4(AX)
MOVL $0, AX /* return 0 */
RET
/*
* Attempt at power saving. -rsc
*/
TEXT halt(SB), $0
CLI /* interrupts off */
CMPL nrdy(SB), $0
JEQ _nothingready
STI /* interrupts on */
RET
_nothingready:
STI /* interrupts on: service before rescheduling */
HLT
RET
/*
* Interrupt/exception handling.
* Each entry in the vector table calls either _strayintr or _strayintrx depending
* on whether an error code has been automatically pushed onto the stack
* (_strayintrx) or not, in which case a dummy entry must be pushed before retrieving
* the trap type from the vector table entry and placing it on the stack as part
* of the Ureg structure.
* The size of each entry in the vector table (6 bytes) is known in trapinit().
*/
TEXT _strayintr(SB), $0
PUSHL AX /* save AX */
MOVL 4(SP), AX /* return PC from vectortable(SB) */
JMP intrcommon
TEXT _strayintrx(SB), $0
XCHGL AX, (SP) /* swap AX with vectortable CALL PC */
intrcommon:
PUSHL DS /* save DS */
PUSHL $(KDSEL)
POPL DS /* fix up DS */
MOVBLZX (AX), AX /* trap type -> AX */
XCHGL AX, 4(SP) /* exchange trap type with saved AX */
PUSHL ES /* save ES */
PUSHL $(KDSEL)
POPL ES /* fix up ES */
PUSHL FS /* save the rest of the Ureg struct */
PUSHL GS
PUSHAL
PUSHL SP /* Ureg* argument to trap */
CALL trap(SB)
TEXT forkret(SB), $0
POPL AX
POPAL
POPL GS
POPL FS
POPL ES
POPL DS
ADDL $8, SP /* pop error code and trap type */
IRETL
TEXT vectortable(SB), $0
CALL _strayintr(SB); BYTE $0x00 /* divide error */
CALL _strayintr(SB); BYTE $0x01 /* debug exception */
CALL _strayintr(SB); BYTE $0x02 /* NMI interrupt */
CALL _strayintr(SB); BYTE $0x03 /* breakpoint */
CALL _strayintr(SB); BYTE $0x04 /* overflow */
CALL _strayintr(SB); BYTE $0x05 /* bound */
CALL _strayintr(SB); BYTE $0x06 /* invalid opcode */
CALL _strayintr(SB); BYTE $0x07 /* no coprocessor available */
CALL _strayintrx(SB); BYTE $0x08 /* double fault */
CALL _strayintr(SB); BYTE $0x09 /* coprocessor segment overflow */
CALL _strayintrx(SB); BYTE $0x0A /* invalid TSS */
CALL _strayintrx(SB); BYTE $0x0B /* segment not available */
CALL _strayintrx(SB); BYTE $0x0C /* stack exception */
CALL _strayintrx(SB); BYTE $0x0D /* general protection error */
CALL _strayintrx(SB); BYTE $0x0E /* page fault */
CALL _strayintr(SB); BYTE $0x0F /* */
CALL _strayintr(SB); BYTE $0x10 /* coprocessor error */
CALL _strayintrx(SB); BYTE $0x11 /* alignment check */
CALL _strayintr(SB); BYTE $0x12 /* machine check */
CALL _strayintr(SB); BYTE $0x13
CALL _strayintr(SB); BYTE $0x14
CALL _strayintr(SB); BYTE $0x15
CALL _strayintr(SB); BYTE $0x16
CALL _strayintr(SB); BYTE $0x17
CALL _strayintr(SB); BYTE $0x18
CALL _strayintr(SB); BYTE $0x19
CALL _strayintr(SB); BYTE $0x1A
CALL _strayintr(SB); BYTE $0x1B
CALL _strayintr(SB); BYTE $0x1C
CALL _strayintr(SB); BYTE $0x1D
CALL _strayintr(SB); BYTE $0x1E
CALL _strayintr(SB); BYTE $0x1F
CALL _strayintr(SB); BYTE $0x20 /* VectorLAPIC */
CALL _strayintr(SB); BYTE $0x21
CALL _strayintr(SB); BYTE $0x22
CALL _strayintr(SB); BYTE $0x23
CALL _strayintr(SB); BYTE $0x24
CALL _strayintr(SB); BYTE $0x25
CALL _strayintr(SB); BYTE $0x26
CALL _strayintr(SB); BYTE $0x27
CALL _strayintr(SB); BYTE $0x28
CALL _strayintr(SB); BYTE $0x29
CALL _strayintr(SB); BYTE $0x2A
CALL _strayintr(SB); BYTE $0x2B
CALL _strayintr(SB); BYTE $0x2C
CALL _strayintr(SB); BYTE $0x2D
CALL _strayintr(SB); BYTE $0x2E
CALL _strayintr(SB); BYTE $0x2F
CALL _strayintr(SB); BYTE $0x30
CALL _strayintr(SB); BYTE $0x31
CALL _strayintr(SB); BYTE $0x32
CALL _strayintr(SB); BYTE $0x33
CALL _strayintr(SB); BYTE $0x34
CALL _strayintr(SB); BYTE $0x35
CALL _strayintr(SB); BYTE $0x36
CALL _strayintr(SB); BYTE $0x37
CALL _strayintr(SB); BYTE $0x38
CALL _strayintr(SB); BYTE $0x39
CALL _strayintr(SB); BYTE $0x3A
CALL _strayintr(SB); BYTE $0x3B
CALL _strayintr(SB); BYTE $0x3C
CALL _strayintr(SB); BYTE $0x3D
CALL _strayintr(SB); BYTE $0x3E
CALL _strayintr(SB); BYTE $0x3F
// CALL _syscallintr(SB); BYTE $0x40 /* VectorSYSCALL */
CALL _strayintr(SB); BYTE $0x40
CALL _strayintr(SB); BYTE $0x41
CALL _strayintr(SB); BYTE $0x42
CALL _strayintr(SB); BYTE $0x43
CALL _strayintr(SB); BYTE $0x44
CALL _strayintr(SB); BYTE $0x45
CALL _strayintr(SB); BYTE $0x46
CALL _strayintr(SB); BYTE $0x47
CALL _strayintr(SB); BYTE $0x48
CALL _strayintr(SB); BYTE $0x49
CALL _strayintr(SB); BYTE $0x4A
CALL _strayintr(SB); BYTE $0x4B
CALL _strayintr(SB); BYTE $0x4C
CALL _strayintr(SB); BYTE $0x4D
CALL _strayintr(SB); BYTE $0x4E
CALL _strayintr(SB); BYTE $0x4F
CALL _strayintr(SB); BYTE $0x50
CALL _strayintr(SB); BYTE $0x51
CALL _strayintr(SB); BYTE $0x52
CALL _strayintr(SB); BYTE $0x53
CALL _strayintr(SB); BYTE $0x54
CALL _strayintr(SB); BYTE $0x55
CALL _strayintr(SB); BYTE $0x56
CALL _strayintr(SB); BYTE $0x57
CALL _strayintr(SB); BYTE $0x58
CALL _strayintr(SB); BYTE $0x59
CALL _strayintr(SB); BYTE $0x5A
CALL _strayintr(SB); BYTE $0x5B
CALL _strayintr(SB); BYTE $0x5C
CALL _strayintr(SB); BYTE $0x5D
CALL _strayintr(SB); BYTE $0x5E
CALL _strayintr(SB); BYTE $0x5F
CALL _strayintr(SB); BYTE $0x60
CALL _strayintr(SB); BYTE $0x61
CALL _strayintr(SB); BYTE $0x62
CALL _strayintr(SB); BYTE $0x63
CALL _strayintr(SB); BYTE $0x64
CALL _strayintr(SB); BYTE $0x65
CALL _strayintr(SB); BYTE $0x66
CALL _strayintr(SB); BYTE $0x67
CALL _strayintr(SB); BYTE $0x68
CALL _strayintr(SB); BYTE $0x69
CALL _strayintr(SB); BYTE $0x6A
CALL _strayintr(SB); BYTE $0x6B
CALL _strayintr(SB); BYTE $0x6C
CALL _strayintr(SB); BYTE $0x6D
CALL _strayintr(SB); BYTE $0x6E
CALL _strayintr(SB); BYTE $0x6F
CALL _strayintr(SB); BYTE $0x70
CALL _strayintr(SB); BYTE $0x71
CALL _strayintr(SB); BYTE $0x72
CALL _strayintr(SB); BYTE $0x73
CALL _strayintr(SB); BYTE $0x74
CALL _strayintr(SB); BYTE $0x75
CALL _strayintr(SB); BYTE $0x76
CALL _strayintr(SB); BYTE $0x77
CALL _strayintr(SB); BYTE $0x78
CALL _strayintr(SB); BYTE $0x79
CALL _strayintr(SB); BYTE $0x7A
CALL _strayintr(SB); BYTE $0x7B
CALL _strayintr(SB); BYTE $0x7C
CALL _strayintr(SB); BYTE $0x7D
CALL _strayintr(SB); BYTE $0x7E
CALL _strayintr(SB); BYTE $0x7F
CALL _strayintr(SB); BYTE $0x80 /* Vector[A]PIC */
CALL _strayintr(SB); BYTE $0x81
CALL _strayintr(SB); BYTE $0x82
CALL _strayintr(SB); BYTE $0x83
CALL _strayintr(SB); BYTE $0x84
CALL _strayintr(SB); BYTE $0x85
CALL _strayintr(SB); BYTE $0x86
CALL _strayintr(SB); BYTE $0x87
CALL _strayintr(SB); BYTE $0x88
CALL _strayintr(SB); BYTE $0x89
CALL _strayintr(SB); BYTE $0x8A
CALL _strayintr(SB); BYTE $0x8B
CALL _strayintr(SB); BYTE $0x8C
CALL _strayintr(SB); BYTE $0x8D
CALL _strayintr(SB); BYTE $0x8E
CALL _strayintr(SB); BYTE $0x8F
CALL _strayintr(SB); BYTE $0x90
CALL _strayintr(SB); BYTE $0x91
CALL _strayintr(SB); BYTE $0x92
CALL _strayintr(SB); BYTE $0x93
CALL _strayintr(SB); BYTE $0x94
CALL _strayintr(SB); BYTE $0x95
CALL _strayintr(SB); BYTE $0x96
CALL _strayintr(SB); BYTE $0x97
CALL _strayintr(SB); BYTE $0x98
CALL _strayintr(SB); BYTE $0x99
CALL _strayintr(SB); BYTE $0x9A
CALL _strayintr(SB); BYTE $0x9B
CALL _strayintr(SB); BYTE $0x9C
CALL _strayintr(SB); BYTE $0x9D
CALL _strayintr(SB); BYTE $0x9E
CALL _strayintr(SB); BYTE $0x9F
CALL _strayintr(SB); BYTE $0xA0
CALL _strayintr(SB); BYTE $0xA1
CALL _strayintr(SB); BYTE $0xA2
CALL _strayintr(SB); BYTE $0xA3
CALL _strayintr(SB); BYTE $0xA4
CALL _strayintr(SB); BYTE $0xA5
CALL _strayintr(SB); BYTE $0xA6
CALL _strayintr(SB); BYTE $0xA7
CALL _strayintr(SB); BYTE $0xA8
CALL _strayintr(SB); BYTE $0xA9
CALL _strayintr(SB); BYTE $0xAA
CALL _strayintr(SB); BYTE $0xAB
CALL _strayintr(SB); BYTE $0xAC
CALL _strayintr(SB); BYTE $0xAD
CALL _strayintr(SB); BYTE $0xAE
CALL _strayintr(SB); BYTE $0xAF
CALL _strayintr(SB); BYTE $0xB0
CALL _strayintr(SB); BYTE $0xB1
CALL _strayintr(SB); BYTE $0xB2
CALL _strayintr(SB); BYTE $0xB3
CALL _strayintr(SB); BYTE $0xB4
CALL _strayintr(SB); BYTE $0xB5
CALL _strayintr(SB); BYTE $0xB6
CALL _strayintr(SB); BYTE $0xB7
CALL _strayintr(SB); BYTE $0xB8
CALL _strayintr(SB); BYTE $0xB9
CALL _strayintr(SB); BYTE $0xBA
CALL _strayintr(SB); BYTE $0xBB
CALL _strayintr(SB); BYTE $0xBC
CALL _strayintr(SB); BYTE $0xBD
CALL _strayintr(SB); BYTE $0xBE
CALL _strayintr(SB); BYTE $0xBF
CALL _strayintr(SB); BYTE $0xC0
CALL _strayintr(SB); BYTE $0xC1
CALL _strayintr(SB); BYTE $0xC2
CALL _strayintr(SB); BYTE $0xC3
CALL _strayintr(SB); BYTE $0xC4
CALL _strayintr(SB); BYTE $0xC5
CALL _strayintr(SB); BYTE $0xC6
CALL _strayintr(SB); BYTE $0xC7
CALL _strayintr(SB); BYTE $0xC8
CALL _strayintr(SB); BYTE $0xC9
CALL _strayintr(SB); BYTE $0xCA
CALL _strayintr(SB); BYTE $0xCB
CALL _strayintr(SB); BYTE $0xCC
CALL _strayintr(SB); BYTE $0xCD
CALL _strayintr(SB); BYTE $0xCE
CALL _strayintr(SB); BYTE $0xCF
CALL _strayintr(SB); BYTE $0xD0
CALL _strayintr(SB); BYTE $0xD1
CALL _strayintr(SB); BYTE $0xD2
CALL _strayintr(SB); BYTE $0xD3
CALL _strayintr(SB); BYTE $0xD4
CALL _strayintr(SB); BYTE $0xD5
CALL _strayintr(SB); BYTE $0xD6
CALL _strayintr(SB); BYTE $0xD7
CALL _strayintr(SB); BYTE $0xD8
CALL _strayintr(SB); BYTE $0xD9
CALL _strayintr(SB); BYTE $0xDA
CALL _strayintr(SB); BYTE $0xDB
CALL _strayintr(SB); BYTE $0xDC
CALL _strayintr(SB); BYTE $0xDD
CALL _strayintr(SB); BYTE $0xDE
CALL _strayintr(SB); BYTE $0xDF
CALL _strayintr(SB); BYTE $0xE0
CALL _strayintr(SB); BYTE $0xE1
CALL _strayintr(SB); BYTE $0xE2
CALL _strayintr(SB); BYTE $0xE3
CALL _strayintr(SB); BYTE $0xE4
CALL _strayintr(SB); BYTE $0xE5
CALL _strayintr(SB); BYTE $0xE6
CALL _strayintr(SB); BYTE $0xE7
CALL _strayintr(SB); BYTE $0xE8
CALL _strayintr(SB); BYTE $0xE9
CALL _strayintr(SB); BYTE $0xEA
CALL _strayintr(SB); BYTE $0xEB
CALL _strayintr(SB); BYTE $0xEC
CALL _strayintr(SB); BYTE $0xED
CALL _strayintr(SB); BYTE $0xEE
CALL _strayintr(SB); BYTE $0xEF
CALL _strayintr(SB); BYTE $0xF0
CALL _strayintr(SB); BYTE $0xF1
CALL _strayintr(SB); BYTE $0xF2
CALL _strayintr(SB); BYTE $0xF3
CALL _strayintr(SB); BYTE $0xF4
CALL _strayintr(SB); BYTE $0xF5
CALL _strayintr(SB); BYTE $0xF6
CALL _strayintr(SB); BYTE $0xF7
CALL _strayintr(SB); BYTE $0xF8
CALL _strayintr(SB); BYTE $0xF9
CALL _strayintr(SB); BYTE $0xFA
CALL _strayintr(SB); BYTE $0xFB
CALL _strayintr(SB); BYTE $0xFC
CALL _strayintr(SB); BYTE $0xFD
CALL _strayintr(SB); BYTE $0xFE
CALL _strayintr(SB); BYTE $0xFF
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