IBM PC XT BIOS
E191795
IBM PC XT BIOS is the low-level firmware that initializes and controls the hardware of the IBM PC XT, providing essential system services for its operating systems and software.
All labels observed (1)
| Label | Occurrences |
|---|---|
| IBM PC XT BIOS canonical | 1 |
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
IBM PC compatible BIOS
ⓘ
computer firmware ⓘ system BIOS ⓘ |
| architecture | x86 ⓘ |
| bootProcess | loads boot sector from disk ⓘ |
| checksHardware |
ROM checksums
ⓘ
disk controllers ⓘ keyboard presence ⓘ system RAM ⓘ video adapter ⓘ |
| compatibleWith |
MS-DOS
ⓘ
MS-DOS ⓘ
surface form:
PC DOS
|
| contains |
bootstrap code
ⓘ
character font data ⓘ hardware configuration routines ⓘ |
| cpuSupport | Intel 8088 ⓘ |
| designedFor |
floppy disk boot
ⓘ
hard disk boot ⓘ |
| developedBy | IBM ⓘ |
| exposes | interrupt vector table ⓘ |
| influenced | later PC compatible BIOS implementations ⓘ |
| nonVolatile | true ⓘ |
| performs | POST ⓘ |
| platform | IBM PC XT ⓘ |
| primaryFunction |
basic I/O services
ⓘ
bootstrap loader ⓘ hardware initialization ⓘ power-on self-test ⓘ |
| providesInterface |
INT 10h video services
ⓘ
INT 13h disk services ⓘ INT 14h serial services ⓘ INT 16h keyboard services ⓘ INT 17h printer services ⓘ software interrupt API ⓘ |
| providesService |
disk services
ⓘ
display services ⓘ interrupt handling ⓘ keyboard services ⓘ memory size detection ⓘ printer services ⓘ serial port services ⓘ timer services ⓘ |
| releaseEra | early 1980s ⓘ |
| romSize | 64 KB ⓘ |
| storageLocation | ROM ⓘ |
| successorTo |
ROM BIOS
ⓘ
surface form:
IBM PC 5150 BIOS
|
| supportsBus | ISA ⓘ |
| usedIn |
IBM 5160
ⓘ
IBM PC XT ⓘ
surface form:
IBM Personal Computer XT
|
| wordSize | 16-bit ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.