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94 lines
1.9 KiB
Plaintext
94 lines
1.9 KiB
Plaintext
pagesize 45
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; *****************************
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; * Codemacros for 8087 *
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; * numeric data processor: *
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; ***************************
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;
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; stack references:
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st equ 0 ; stack top (= register 0)
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st0 equ 0 ; register 0
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st1 equ 1 ; register 1
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st2 equ 2 ; register 2
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st3 equ 3 ; register 3
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st4 equ 4 ; register 4
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st5 equ 5 ; register 5
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st6 equ 6 ; register 6
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st7 equ 7 ; register 7
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;
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;
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codemacro FRSTOR src:M
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db 9bh
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segfix src
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db 0ddh
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modrm 4,src
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endm
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codemacro FSTCW dst:Mw
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db 9bh
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segfix dst
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db 0d9h
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modrm 7,dst
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endm
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codemacro FDISI
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db 9bh
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dw 0e1dbh
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endm
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codemacro FSAVE dst:M
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segfix dst
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db 0ddh
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modrm 6,dst
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endm
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codemacro FNINIT
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dw 0e3dbh
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endm
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codemacro FNDISI
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dw 0e1dbh
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endm
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codemacro FNSTCW dst:Mw
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segfix dst
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db 0d9h
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modrm 7,dst
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endm
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codemacro FNSTSW dst:Mw
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segfix dst
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db 0ddh
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modrm 7,dst
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endm
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codemacro FNCLEX
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dw 0e2dbh
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endm
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codemacro FNSAVE dst:M
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db 0ddh
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modrm 6,dst
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endm
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codemacro FNSTENV dst:M
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segfix dst
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db 0d9h
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modrm 6,dst
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endm
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codemacro FLDENV src:M
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db 9bh
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segfix src
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db 0d9h
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modrm 4,src
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endm
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codemacro FNOP
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db 9bh
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dw 0d0ddh
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endm
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FWAIT equ WAIT
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