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apm.asm
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comment |*******************************************************************
* Copyright (c) 1984-2025 Forever Young Software Benjamin David Lunt *
* *
* i440FX BIOS ROM v1.0 *
* FILE: apm.asm *
* *
* This code is freeware, not public domain. Please use respectfully. *
* *
* You may: *
* - use this code for learning purposes only. *
* - use this code in your own Operating System development. *
* - distribute any code that you produce pertaining to this code *
* as long as it is for learning purposes only, not for profit, *
* and you give credit where credit is due. *
* *
* You may NOT: *
* - distribute this code for any purpose other than listed above. *
* - distribute this code for profit. *
* *
* You MUST: *
* - include this whole comment block at the top of this file. *
* - include contact information to where the original source is located. *
* https://github.com/fysnet/i440fx *
* *
* DESCRIPTION: *
* apm include file *
* *
* BUILT WITH: NewBasic Assembler *
* http://www.fysnet/newbasic.htm *
* NBASM ver 00.27.15 *
* Command line: nbasm i440fx /z<enter> *
* *
* Last Updated: 17 Jan 2025 *
* *
****************************************************************************
* Notes: *
* *
***************************************************************************|
apm_poweroff_string db 'Shutdown',0
apm_suspend_string db 'Suspend',0
apm_standby_string db 'Standby',0
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; 16-bit real/pmode out string
; on entry:
; dx = port value
; ax = string offset
; on return
; nothing
; destroys none
apm_send_rm_string proc near uses ax bx
mov bx,ax
@@: mov al,cs:[bx]
or al,al
jz short @f
out dx,al
inc bx
jmp short @b
@@: ret
apm_send_rm_string endp
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; real_mode apm int 15 service call handler
; on entry:
; general registers
; on return
; general registers
; destroys none
apm_do_realmode proc far
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; ah = service 53h, al = subservice
pushf ; 16-bit protected mode needs the flags preserved
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM installation check
cmp al,0x00
jne short @f
mov ax,0x0102 ; version 1.2
mov bx,0x504D ; 'PM'
mov cx,((1<<0) | (1<<1)) ; 16-bit and 32-bit interface supported
jmp int15_apm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM connect realmode interface
@@: cmp al,0x01
jne short @f
jmp int15_apm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM connect 16-bit pmode interface
@@: cmp al,0x02
jne short @f
mov bx,offset apm_do_realmode
mov ax,BIOS_BASE
mov si,0xFFF0
mov cx,BIOS_BASE
mov di,0xFFF0
jmp int15_apm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM connect 32-bit pmode interface
@@: cmp al,0x03
jne short @f
mov ax,BIOS_BASE
mov ebx,offset apm_do_pmode32
mov cx,BIOS_BASE
mov esi,0xFFF0FFF0
mov dx,BIOS_BASE
mov di,0xFFF0
jmp int15_apm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM disconnect
@@: cmp al,0x04
jne short @f
jmp int15_apm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM CPU idle
@@: cmp al,0x05
jne short @f
sti
hlt
jmp int15_apm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM CPU busy
@@: cmp al,0x06
jne short @f
xchg cx,cx ; ben ;;;;;;;;;;;;;;;;;;;;;;;;;;;
jmp int15_apm_fail
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM set power state
@@: cmp al,0x07
jne short @f
cmp bx,0x01
jne int15_apm_success_noah
; turn off system?
cmp cx,0x0003
jne short apm_real_07_03
cli
mov dx,0x8900
mov ax,offset apm_poweroff_string
call apm_send_rm_string
apm_real_07_00:
hlt
jmp short apm_real_07_00
apm_real_07_03:
; suspend system?
cmp cx,0x0002
jne short apm_real_07_02
push dx
mov dx,0x8900
mov ax,offset apm_suspend_string
call apm_send_rm_string
pop dx
jmp short int15_apm_success_noah
apm_real_07_02:
; standby system?
cmp cx,0x0001
jne short int15_apm_success_noah
push dx
mov dx,0x8900
mov ax,offset apm_standby_string
call apm_send_rm_string
pop dx
jmp short int15_apm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM Enable/Disable
@@: cmp al,0x08
jne short @f
jmp short int15_apm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM Restore power on defaults
@@: cmp al,0x09
jne short @f
xchg cx,cx ; ben ;;;;;;;;;;;;;;;;;;;;;;;;;;;
jmp short int15_apm_fail
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM Get Power Status
@@: cmp al,0x0A
jne short @f
mov bx,0x01FF
mov cx,0x80FF
mov dx,0xFFFF
xor si,si
jmp short int15_apm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM Get PM Event
@@: cmp al,0x0B
jne short @f
mov ah,0x80
jmp short int15_apm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM Get Power Status
@@: cmp al,0x0C
jne short @f
xchg cx,cx ; ben ;;;;;;;;;;;;;;;;;;;;;;;;;;;
jmp short int15_apm_fail
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM Enable/Disable Device PM
@@: cmp al,0x0D
jne short @f
; freedos calls this one
; xchg cx,cx ; ben ;;;;;;;;;;;;;;;;;;;;;;;;;;;
jmp short int15_apm_fail
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM Get Driver Version
@@: cmp al,0x0E
jne short @f
mov ax,0x0102
jmp short int15_apm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM Engage/Disengae
@@: cmp al,0x0F
jne short @f
jmp short int15_apm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM Get Capabilities
@@: cmp al,0x10
jne short @f
mov bl,0x00
mov cx,0x0000
jmp short int15_apm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM unknown/unsupported call
@@:
;xchg cx,cx ; ben ;;;;;;;;;;;;;;;;;;;;;;;;;;;
int15_apm_fail:
mov ah,0x00
int15_apm_fail_noah:
popf ; 16-bit protected mode needs the flags preserved
stc
int15_apm_fail_ret:
retf
int15_apm_success:
mov ah,0x00
int15_apm_success_noah:
popf ; 16-bit protected mode needs the flags preserved
clc
int15_apm_success_ret:
retf
apm_do_realmode endp
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; this is the pmode service
.pmode
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; 32-bit pmode out string
; on entry:
; dx = port value
; ax = string offset
; on return
; nothing
; destroys none
apm_send_pm_string proc near uses ax bx
mov bx,ax
@@: mov al,cs:[bx]
or al,al
jz short @f
out dx,al
inc bx
jmp short @b
@@: ret
ret
apm_send_pm_string endp
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; 16-bit pmode apm int 15 service call handler
; on entry:
; general registers
; on return
; general registers
; destroys none
apm_do_pmode32 proc far
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; ah = service 53h, al = subservice
pushfd ; 32-bit protected mode needs the flags preserved
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM installation check
cmp al,0x00
jne short @f
mov ax,0x0102 ; version 1.2
mov bx,0x504D ; 'PM'
mov cx,((1<<0) | (1<<1)) ; 16-bit and 32-bit interface supported
jmp int15_apm_pm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM connect realmode interface
@@: cmp al,0x01
jne short @f
jmp int15_apm_pm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM connect 16-bit pmode interface
@@: cmp al,0x02
jne short @f
mov bx,offset apm_do_realmode
mov ax,BIOS_BASE
mov si,0xFFF0
mov cx,BIOS_BASE
mov di,0xFFF0
jmp int15_apm_pm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM connect 32-bit pmode interface
@@: cmp al,0x03
jne short @f
mov ebx,offset apm_do_pmode32
mov ax,BIOS_BASE
mov cx,BIOS_BASE
mov esi,0xFFF0FFF0
mov dx,BIOS_BASE
mov di,0xFFF0
jmp int15_apm_pm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM disconnect
@@: cmp al,0x04
jne short @f
jmp int15_apm_pm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM CPU idle
@@: cmp al,0x05
jne short @f
sti
hlt
jmp int15_apm_pm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM CPU busy
@@: cmp al,0x06
jne short @f
xchg cx,cx ; ben ;;;;;;;;;;;;;;;;;;;;;;;;;;;
jmp int15_apm_pm_fail
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM set power state
@@: cmp al,0x07
jne short @f
cmp bx,0x01
jne int15_apm_pm_success_noah
; turn off system?
cmp cx,0x0003
jne short apm_pmode_07_03
cli
mov dx,0x8900
mov ax,offset apm_poweroff_string
call apm_send_pm_string
apm_pmode_07_00:
hlt
jmp short apm_pmode_07_00
apm_pmode_07_03:
; suspend system?
cmp cx,0x0002
jne short apm_pmode_07_02
push dx
mov dx,0x8900
mov ax,offset apm_suspend_string
call apm_send_pm_string
pop dx
jmp short int15_apm_pm_success_noah
apm_pmode_07_02:
; standby system?
cmp cx,0x0001
jne short int15_apm_pm_success_noah
push dx
mov dx,0x8900
mov ax,offset apm_standby_string
call apm_send_pm_string
pop dx
jmp short int15_apm_pm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM Enable/Disable
@@: cmp al,0x08
jne short @f
jmp short int15_apm_pm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM Restore power on defaults
@@: cmp al,0x09
jne short @f
xchg cx,cx ; ben ;;;;;;;;;;;;;;;;;;;;;;;;;;;
jmp short int15_apm_pm_fail
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM Get Power Status
@@: cmp al,0x0A
jne short @f
mov bx,0x01FF
mov cx,0x80FF
mov dx,0xFFFF
xor si,si
jmp short int15_apm_pm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM Get PM Event
@@: cmp al,0x0B
jne short @f
mov ah,0x80
jmp short int15_apm_pm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM Get Power Status
@@: cmp al,0x0C
jne short @f
xchg cx,cx ; ben ;;;;;;;;;;;;;;;;;;;;;;;;;;;
jmp short int15_apm_pm_fail
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM Enable/Disable Device PM
@@: cmp al,0x0D
jne short @f
xchg cx,cx ; ben ;;;;;;;;;;;;;;;;;;;;;;;;;;;
jmp short int15_apm_pm_fail
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM Get Driver Version
@@: cmp al,0x0E
jne short @f
mov ax,0x0102
jmp short int15_apm_pm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM Engage/Disengae
@@: cmp al,0x0F
jne short @f
jmp short int15_apm_pm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM Get Capabilities
@@: cmp al,0x10
jne short @f
mov bl,0x00
mov cx,0x0000
jmp short int15_apm_pm_success_noah
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; APM unknown/unsupported call
@@:
;xchg cx,cx ; ben ;;;;;;;;;;;;;;;;;;;;;;;;;;;
int15_apm_pm_fail:
mov ah,0x00
int15_apm_pm_fail_noah:
popfd ; 32-bit protected mode needs the flags preserved
stc
retf
int15_apm_pm_success:
mov ah,0x00
int15_apm_pm_success_noah:
popfd ; 32-bit protected mode needs the flags preserved
clc
retf
apm_do_pmode32 endp
; =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
; move back to real mode
.rmode
.end