RBIL61 - write only

RBIL61 - write only

INT 16 - PCIBM PC Tools v5.1-8.0 DESKTOP - CREATE/OPEN/DELETE FILE {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx28047}

INT 21 - DOS 2+ - "OPEN" - OPEN EXISTING FILE {#idx45117}

PORTIBM PC Portable (uses same BIOS as XT) 0022-0024 - CHIPSET FROM PICO POWER, UMC or PCChips {#idx135196}{#idx135429}

PORTIBM PC Portable (uses same BIOS as XT) 03B0-03BF - MDA(Monochrome Display Adapter) A text-only video adapter introduced together with the original IBMInternational Busiuness Machines PCIBM PC. See also CGAColor Graphics Adapter, HGC. (Monochrome Display Adapter based on 6845) {#idx147819}{#idx147828}

PORTIBM PC Portable (uses same BIOS as XT) 0680-0681 - Microchannel POSTsee Power-On Self-Test Diagnostic (write only) {#idx152696}

PORTIBM PC Portable (uses same BIOS as XT) 0AD6-0AD7 - Chips & Technologies PCIBM PC Video (82C9001A) - CONTROL REGISTERS {#idx153249}

PORTIBM PC Portable (uses same BIOS as XT) 9AE8-9AE9 - 8514/A and compatible - GRAPHICS PROCESSOR STATUS / COMMAND {#idx156832}