BIOS.rar_BIOS code

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x (2008-11-20 22:10:59)  title .    PROCESSOR_TIMER_PARITY_REFRESH_NMI TEST;*****************************************************************;;*****************************************************************;;**        **;;** (C)Copyright 1985-1996, American Megatrends Inc. **;;**        **;;**   All Rights Reserved.   **;;**        **;;**  6145-F, Northbelt Parkway, Norcross,  **;;**        **;;**  Georgia - 30071, USA. Phone-(770)-246-8600. **;;**        **;;*****************************************************************;;*****************************************************************;;---------------------------------------; include mbiosequ.equ  ; bios global constants include mbiosmac.mac  ; bios coding macro definition include cf.equ;---------------------------------------; extrn check_point_no_stack:near extrn check_point_stack:near  public bios_suru public shutdown_0 public shutdown_77 public shutdown_88  extrn shutdown_1:near  ; shutdown after memory error extrn shutdown_2:near  ; v_mode exception intr error extrn _shutdown_33:near ; shutdown after memory test extrn shutdown_4:near  ; boot loader request shutdown extrn shutdown_5:near  ; user defined shutdown routine extrn _shutdown_66:near ; shutdown during memory test to display memory size extrn shutdown_7:near  ; unused, (chipset memory detection) extrn shutdown_8:near  ; unused, (soft reset) extrn shutdown_9:near  ; shutdown after block move extrn shutdown_a:near  ; user defined shutdown routine  extrn init_8259_80287:near ; shut 4/5, init 8259, 80287 extrn disable_video:near extrn clear_64k_memory:near extrn int_isr:near  extrn _power_on_delay:byte extrn _software_delay:byte extrn ram_segment:word extrn flush_all_cache:near  extrn power_on_init:near public power_on_init_end extrn hreset_clear:near public hreset_clear_end extrn sreset_clear:near public sreset_clear_end extern StopUsbHostController(dummy_ret):near extrn dummy_ret:near extrn disable_all_cache:near extrn shutdown_init:near public shutdown_init_end extrn decompress_post_init:near;---------------------------------------;; C O D E     S E G M E N T ;;---------------------------------------;cgroup group _text_text segment word public 'CODE' assume cs:cgroup.486p;---------------------------------------; public _BIOS_STARTS_BIOS_STARTS label byte  ; marks start of module;---------------------------------------;; FLAGS TEST (SF,ZF,PF,CF) ;;   ;---;---;---;---;---;---;---;---; ;;   ; S ; Z ; x ; A ; x ; P ; x ; C ; ;;   ;---;---;---;---;---;---;---;---; ;;     HARD RESET OR SHUTDOWN RESET ;;---------------------------------------;; SHUTDOWN PROCESSING  ;;---------------------------------------;bios_suru: cli    ; test under CLI mode cld    ; ensure direction mov ax,cs mov ss,ax; $$$CORE0036+ >>> extern wake_up(wake_up_end):near public wake_up_end jmp wake_up   ; check for wakeupwake_up_end:    ; control will come here only if wake up is not needed; $$$CORE0036+ <<< jmp power_on_initpower_on_init_end: in al,kb_stat_port  ; if sys_flag bit is set test al,00000100b  ; then soft reset else power on jnz shut_5   ; not power-on;---------------------------------------;; VANILLA MEMORY PATCH  ;;---------------------------------------;ifdef VANILLA_BIOS;---------------------------------------;;  save CPUID in cmos 35h(DL), 36h(DH) extrn cmos_data_out:near extrn _refresh_value:byte mov ebp,edx mov al,0b5h mov ah,dl ret_sp cmos_data_out mov al,0b6h mov ah,dh ret_sp cmos_data_out;  start memory refresh.. mov al,00h   ; initialise DMA-PAGE reg. out 8fh,al   ; (used in MEMORY REFRESH) io_delay mov al,01010100b  ; start CH_1 (REFRESH) out 43h,al   ; one byte count used io_delay mov al,cgroup:_refresh_value; low byte count              OUT       41H,AL              MOV       CX,100H     ; 400h..01/11/95              XOR       DI,DI              MOV       ES,DIwpulse1: stosb loop wpulse1;---------------------------------------; extrn vanilla_patch_offset:near cmp cgroup:word ptr vanilla_patch_offset,0ffffh jz ret_off   ; no routine mov sp,offset cgroup:sp_ret_off jmp vanilla_patch_offset-1 evensp_ret_off: dw offset cgroup:ret_off dw 0f000hret_off:endif;---------------------------------------; jmp hreset_clear  ; hard reset init (if any);;;;hreset_clear_end:;;;; jmp shutdown_0x  ; hard reset, goto regs. testshut_5: jmp sreset_clear  ; GA20 disable and other....sreset_clear_end: mov al,8fh   ; shutdown address out cmos_addr_port,al ; mask NMI & select shut byte jcxz short $+2  ; i/o delay jcxz short $+2  ; i/o delay              IN        AL,CMOS_DATA_PORT       ; read shutdown code mov ah,00              MOV       SI,AX       ; save in (SI)              MOV       AL,8FH      ; shutdown address              JCXZ      SHORT $+2   ; i/o delay              OUT       CMOS_ADDR_PORT,AL mov al,00   ; clear shutdown byte jcxz short $+2  ; i/o delay jcxz short $+2  ; i/o delay out cmos_data_port,al mov ax,cs mov ss,ax mov ax,si   ; restore shutdown code cmp al,04h   ; for BOOT loader shutdown jz shut_1   ; & for USER defined shutdown