ExitConfig endp
;;Select The I/O Chip Program Configuration Register Logical Device
;;Input : bl = logical device number
SelectDevice proc |
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push | ax |
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push | dx |
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mov | al,07h | ;; Select control register 7 | |
mov | dx,cs:CONFIG_PORT |
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out | dx,al | ;; Write to Config Port | |
jmp | $+2 |
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mov | al,bl | ;; Write logical device number | |
mov | dx,cs:DATA_PORT | ;; to Data Port | |
out | dx,al |
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pop | dx |
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pop | ax |
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ret |
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SelectDevice endp
;;Setting I/O Chip Program Configuration Register Value
;;Input : al = register number
;;ah = setting value
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