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https://github.com/byteworksinc/ORCA-C.git
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5b26b8cc5b
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117 lines
3.3 KiB
NASM
117 lines
3.3 KiB
NASM
mcopy cgc.macros
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****************************************************************
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*
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* CnvSX - Convert floating point to SANE extended
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*
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* Inputs:
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* rec - pointer to a record
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*
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****************************************************************
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*
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CnvSX start cg
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rec equ 4 record containing values
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rec_real equ 0 disp to real value
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rec_ext equ 8 disp to extended (SANE) value
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tsc set up DP
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phd
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tcd
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ph4 rec push addr of real number
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clc push addr of SANE number
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lda rec
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adc #rec_ext
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tax
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lda rec+2
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adc #0
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pha
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phx
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fd2x convert TOS to extended
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move4 0,4 return
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pld
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pla
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pla
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rtl
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end
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****************************************************************
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*
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* CnvSC - Convert floating point to SANE comp
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*
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* Inputs:
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* rec - pointer to a record
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*
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****************************************************************
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*
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CnvSC start cg
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rec equ 4 record containing values
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rec_real equ 0 disp to real value
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rec_ext equ 8 disp to extended (SANE) value
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rec_cmp equ 18 disp to comp (SANE) value
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tsc set up DP
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phd
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tcd
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ph4 rec push addr of real number
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clc push addr of SANE number
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lda rec
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adc #rec_ext
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tax
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lda rec+2
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adc #0
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pha
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phx
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fd2x convert TOS to extended
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clc push addr of SANE number
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lda rec
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adc #rec_ext
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tax
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lda rec+2
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adc #0
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pha
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phx
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clc push addr of COMP number
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lda rec
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adc #rec_cmp
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tax
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lda rec+2
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adc #0
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pha
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phx
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fx2c convert TOS to extended
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move4 0,4 return
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pld
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pla
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pla
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rtl
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end
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datachk off
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****************************************************************
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*
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* InitLabels - initialize the labels array
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*
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* Outputs:
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* labelTab - initialized
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* intLabel - initialized
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*
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****************************************************************
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*
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InitLabels start cg
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maxLabel equ 3200
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! with labelTab[0] do begin
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lda #-1 val := -1;
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sta labelTab+6
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sta labelTab+8
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stz labelTab defined := false;
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stz labelTab+2 chain := nil;
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stz labelTab+4
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! end; {with}
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ldx #labelTab for i := 1 to maxLabel do
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ldy #labelTab+10 labelTab[i] := labelTab[0];
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lda #maxLabel*10-1
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mvn labelTab,labelTab
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stz intLabel intLabel := 0;
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rtl
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end
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