|
Last change
on this file since 224 was 152, checked in by Tomi Tilli, 14 years ago |
|
Changes to XTIDE Universal BIOS:
- XTIDE mod should now be supported (untested).
- Interrupt Service Routine no longer requires variable from RAMVARS.
- Some small improvements.
|
|
File size:
1.2 KB
|
| Rev | Line | |
|---|
| [90] | 1 | ; Project name : XTIDE Universal BIOS
|
|---|
| 2 | ; Description : Late initialization for XT builds.
|
|---|
| 3 |
|
|---|
| 4 | ; Section containing code
|
|---|
| 5 | SECTION .text
|
|---|
| 6 |
|
|---|
| 7 | ;--------------------------------------------------------------------
|
|---|
| 8 | ; Int19hLate_InitializeInt19h
|
|---|
| 9 | ; Parameters:
|
|---|
| 10 | ; ES: BDA segment
|
|---|
| 11 | ; Returns:
|
|---|
| 12 | ; Nothing
|
|---|
| 13 | ; Corrupts registers:
|
|---|
| 14 | ; BX, SI
|
|---|
| 15 | ;--------------------------------------------------------------------
|
|---|
| 16 | ALIGN JUMP_ALIGN
|
|---|
| 17 | Int19hLate_InitializeInt19h:
|
|---|
| [152] | 18 | mov bx, BIOS_BOOT_LOADER_INTERRUPT_19h
|
|---|
| [90] | 19 | mov si, HandlerForLateInitialization
|
|---|
| 20 | jmp Interrupts_InstallHandlerToVectorInBXFromCSSI
|
|---|
| 21 |
|
|---|
| 22 |
|
|---|
| 23 | ;--------------------------------------------------------------------
|
|---|
| 24 | ; HandlerForLateInitialization
|
|---|
| 25 | ; Parameters:
|
|---|
| 26 | ; Nothing
|
|---|
| 27 | ; Returns:
|
|---|
| 28 | ; Never returns
|
|---|
| 29 | ;--------------------------------------------------------------------
|
|---|
| 30 | ALIGN JUMP_ALIGN
|
|---|
| 31 | HandlerForLateInitialization:
|
|---|
| 32 | LOAD_BDA_SEGMENT_TO es, ax
|
|---|
| [152] | 33 | call Initialize_ShouldSkip ; Skip initialization?
|
|---|
| [90] | 34 | jnz SHORT .SkipInitialization
|
|---|
| [152] | 35 | call Initialize_AndDetectDrives ; Installs boot menu loader
|
|---|
| 36 | int BIOS_BOOT_LOADER_INTERRUPT_19h
|
|---|
| [90] | 37 | .SkipInitialization:
|
|---|
| [152] | 38 | call RamVars_Initialize ; RAMVARS must be initialized even for simple boot loader
|
|---|
| 39 | int BIOS_BOOT_LOADER_INTERRUPT_19h ; Call default system boot loader
|
|---|
Note:
See
TracBrowser
for help on using the repository browser.
