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50 lines
612 B
NASM
50 lines
612 B
NASM
basBSEL:
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call rdExpr
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ret nz
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push ix \ pop hl
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call blkSelPtr
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ld a, l
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jp blkSel
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basBSEEK:
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call rdExpr
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ret nz
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push ix ; --> lvl 1
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call rdExpr
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push ix \ pop de
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pop hl ; <-- lvl 1
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jr z, .skip
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; DE not supplied, set to zero
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ld de, 0
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.skip:
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xor a ; absolute mode
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call blkSeek
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cp a ; ensure Z
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ret
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basGETB:
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call blkGetB
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ret nz
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ld (VAR_TBL), a
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xor a
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ld (VAR_TBL+1), a
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ret
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basPUTB:
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call rdExpr
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ret nz
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push ix \ pop hl
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ld a, l
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jp blkPutB
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basBLKCmds:
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.db "bsel", 0
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.dw basBSEL
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.db "bseek", 0
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.dw basBSEEK
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.db "getb", 0
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.dw basGETB
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.db "putb", 0
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.dw basPUTB
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.db 0xff ; end of table
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