2019-11-25 12:34:23 +11:00
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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
|
2019-12-01 13:13:44 +11:00
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|
|
xor a
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|
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ld (VAR_TBL+1), a
|
2019-11-25 12:34:23 +11:00
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|
|
ret
|
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|
basPUTB:
|
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|
|
|
call rdExpr
|
|
|
|
|
ret nz
|
|
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|
|
push ix \ pop hl
|
|
|
|
|
ld a, l
|
|
|
|
|
jp blkPutB
|
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|
|
|
basBLKCmds:
|
2019-12-01 13:36:34 +11:00
|
|
|
.db "bsel", 0
|
2019-11-25 12:34:23 +11:00
|
|
|
.dw basBSEL
|
|
|
|
|
.db "bseek", 0
|
2019-12-01 13:36:34 +11:00
|
|
|
.dw basBSEEK
|
|
|
|
|
.db "getb", 0
|
2019-11-25 12:34:23 +11:00
|
|
|
.dw basGETB
|
2019-12-01 13:36:34 +11:00
|
|
|
.db "putb", 0
|
2019-11-25 12:34:23 +11:00
|
|
|
.dw basPUTB
|
2019-12-01 13:36:34 +11:00
|
|
|
.db 0xff ; end of table
|
