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AH = 30h AL = function 00h transmit block CX = number of bytes to send 01h receive block CX = buffer size 02h open ports 03h close ports 04h wait 500ms DS:DX -> start of data buffer
Return:
DL = status 00h successful 01h buffer too small 02h transmission timeout 03h checksum failure 04h invalid subfunction 05h peripheral not installed if function 01h: CX = number of bytes received
See Also: AH=00h"Portfolio" - AH=2Eh"Portfolio"
Category: Vendor-specific BIOS Extensions - Int 61h - A
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