9888bdcd29
interface. Do some general consistency fixes and space optimizations. Use of some freed-up space to defend against possible BIOS misfeatures. boot2: Revise disk read interface to provide for boot1 changes. Free up space for this.
65 lines
2.1 KiB
Plaintext
65 lines
2.1 KiB
Plaintext
#
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# Copyright (c) 1998 Robert Nordier
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms are freely
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# permitted provided that the above copyright notice and this
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# paragraph and the following disclaimer are duplicated in all
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# such forms.
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#
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# This software is provided "AS IS" and without any express or
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# implied warranties, including, without limitation, the implied
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# warranties of merchantability and fitness for a particular
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# purpose.
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#
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# $Id: boot1.m4,v 1.2 1998/11/05 20:52:25 rnordier Exp $
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define(_al,0x0)dnl
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define(_cl,0x1)dnl
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define(_dl,0x2)dnl
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define(_bl,0x3)dnl
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define(_ah,0x4)dnl
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define(_ch,0x5)dnl
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define(_dh,0x6)dnl
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define(_bh,0x7)dnl
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define(_ax,0x0)dnl
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define(_cx,0x1)dnl
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define(_dx,0x2)dnl
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define(_bx,0x3)dnl
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define(_sp,0x4)dnl
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define(_bp,0x5)dnl
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define(_si,0x6)dnl
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define(_di,0x7)dnl
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define(_bx_si,0x0)dnl
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define(_bx_di,0x1)dnl
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define(_bp_si,0x2)dnl
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define(_bp_di,0x3)dnl
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define(_si_,0x4)dnl
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define(_di_,0x5)dnl
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define(_bp_,0x6)dnl
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define(_bx_,0x7)dnl
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define(o16,`.byte 0x66')dnl
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define(addbr1,`.byte 0x0; .byte 0x40 | ($1 << 0x3) | $3; .byte $2')dnl
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define(addwr1,`.byte 0x1; .byte 0x40 | ($1 << 0x3) | $3; .byte $2')dnl
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define(subbr1,`.byte 0x28; .byte 0x40 | ($1 << 0x3) | $3; .byte $2')dnl
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define(cmpbi1,`.byte 0x80; .byte 0x78 | $3; .byte $2; .byte $1')dnl
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define(cmpwir,`.byte 0x81; .byte 0xf8 | $2; .word $1')dnl
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define(movbr1,`.byte 0x88; .byte 0x40 | ($1 << 0x3) | $3; .byte $2')dnl
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define(movwr1,`.byte 0x89; .byte 0x40 | ($1 << 0x3) | $3; .byte $2')dnl
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define(movwrm,`.byte 0x89; .byte 0x6 | ($1 << 0x3); .word $2')dnl
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define(movb1r,`.byte 0x8a; .byte 0x40 | ($3 << 0x3) | $2; .byte $1')dnl
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define(movw1r,`.byte 0x8b; .byte 0x40 | ($3 << 0x3) | $2; .byte $1')dnl
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define(movwir,`.byte 0xb8 | $2; .word $1')dnl
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define(lesw1r,`.byte 0xc4; .byte 0x40 | ($3 << 0x3) | $2; .byte $1')dnl
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define(movbi1,`.byte 0xc6; .byte 0x40 | $3; .byte $2; .byte $1')dnl
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define(callwi,`.byte 0xe8; .word $1 - . - 0x2')dnl
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define(jmpnwi,`.byte 0xe9; .word $1 - . - 0x2')dnl
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define(tstbi0,`.byte 0xf6; .byte $2; .byte $1')dnl
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define(tstbim,`.byte 0xf6; .byte 0x6; .word $2; .byte $1')dnl
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define(incw1,`.byte 0xff; .byte 0x40 | $2; .byte $1')dnl
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