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28 lines
344 B
28 lines
344 B
COMMON 8F ??
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CPMSYS 8E 00
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HBIOS 8D ??
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TPA 8C 01
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BUFS 8B 02
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8D:7000 -> 8E:0300
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00 -> 8E
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01 -> 8C
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02 -> 8B
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03 -> 8A
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...
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if bnk = 0, then hbbnk = 8EH (BID_USR)
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else hbbnk = 8DH (BID_BIOS) - bnk
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or a
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jr z,bank0
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neg ; 2 -> -2
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add 8DH ; 8D - 2 = 8B
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jp HBX_SETBNK
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bank0:
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ld a,(8EH)
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jp HBX_SETBNK
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ret
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