home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Magazyn Enter 1999 January
/
enter_01_1999_2.iso
/
BIOS
/
ctchip34
/
CX486DX.CFG
< prev
next >
Wrap
Text File
|
1995-10-02
|
2KB
|
56 lines
;********************************************
; Chipsatz-Konfiguration für Cyrix 486DX (M7)
;********************************************
INDEXPORT=22h
DATENPORT=23h
INDEX=C1h; Configuration Control Register 14
Bit=765 ; reserved
Bit=4 ;0/1 NO_Lock
Bit=3 ;0/1 MMAC Main Memory Access
Bit=2 ;0/1 SMAC System Management Access
Bit=1 ;0/1 SMI System Memory Modus, output pin /SMADS
Bit=0 ;0/1 (RPL) output pins /RPLSET and /RPLVAL
INDEX=C2h; Configuration Control Register 2
BIT=7 ;0/1 (SUSP) Suspend Pins (/SUSP und /SUSPA)
BIT=6 ;0/1 (BWRT) Burst Write Cycles
BIT=5 ;0/1 (BARB) Castoff dirty lines every HOLD
BIT=4 ;0/1 (WT1) Memory access to 640..1M always Write Through
BIT=3 ;0/1 (HALT) Suspend on Halt
BIT=2 ;0/1 (LOCK) Prohibit Changing of the NW-Bit in CR0
BIT=1 ;0/1 (WBAK) EnableWrite Back Cache Interface Pins
BIT=0 ;reserved
INDEX=C3h; Configuration Control Register 3
BIT=765432 ;reserved
BIT=1 ;(0/1) (NMI) during SMM
BIT=0 ;(SMI-LOCK)
0= disabled
1= CCR1 Bits 1,2,3,7 locked
CCR3 Bits 0,1 locked
SMAR-Bits locked
INDEX=CDh; ;(SMAR) System Memory Address Register;
BIT=7654321 ; A31 - A24 of SMM Address
INDEX=CEh; ;(SMAR) System Memory Address Register;
BIT=7654321 ; A23 - A16 of SMM Address
INDEX=CFh; ;(SMAR) System Memory Address Register;
BIT=7654 ; A15 - A12 of SMM Address
BIT=3210 ; Size 4KB *2^n
INDEX=FEh ;(DIR0) Device Identification
BIT=76543210 ;
00011010 = cx486DX
00011011 = cx486DX/2
else = unbekannter Prozessortyp
INDEX=FFh ; (DIR1) Device Identification 1
BIT=7654 ; Revision Identification
BIT=3210 ; Stepping Identification