User`s manual

DIGITAL-LOGIC AG MSMP5 / P3 SEN/SEV Manual V1.6A

4.6 BIOS

4.6.1 ROM-BIOS Sockets

An EPROM socket with 8 Bit wide data access normally contains the board's AT compatible ROM-BIOS. The

socket takes a 29F020 EPROM (or equivalent) device. The board's wait-state control logic automatically in-

serts four memory wait states in all CPU accesses to this socket. The ROM-BIOS sockets occupies the

memory area from C0000H through FFFFFh; however, the board's ASIC logic reserves the entire area from

C0000h through FFFFFh for onboard devices, so that this area is already usable for ROM-DOS and BIOS

expansion modules. Consult the appropriate address map for the MICROSPACE MSMP5SEN/SEV ROM-

BIOS sockets.

4.6.1.1 Standard BIOS ROM

DEVICE: 29F020 PLCC32

MAP: E0000 - FFFFFh Core BIOS 128k

C0000 - CBFFFh VGA BIOS 32k

CC000 - CFFFFh reserved

4.6.2 EEPROM Memory for Setup

The EEPROM is used for setup and configuration data, stored as an alternative to the CMOS-RTC. Option-

ally, the EEPROM setup driver may update the CMOS RTC, if the battery is running down and the checksum

error would appear and stop the system. The capacity of the EEPROM is 2 kByte.

Organisation of the 2048Byte EEPROMs:

Address MAP: Function:

0000h CMOS-Setup valid (01=valid)

0001h Keymatrix-Setup valid (01=valid)

0003h Flag for DLAG-Message (FF=no message)

0010h-007Fh Copy of CMOS-Setup data

0080h-00FFh reserved for AUX-CMOS-Setup

0100h-010Fh Serial-Number

0110h-0113h Production date (year/day/month)

0114h-0117h 1. Service date (year/day/month)

0118h-011Bh 2. Service date (year/day/month)

011Ch-011Fh 3. Service date (year/day/month)

0120h-0122h Booterrors (Autoincremented if any booterror occurs)

0123h-0125h Setup Entries (Autoincremented on every Setup entry)

0126h-0128h Low Battery (Autoincremented everytime the battery is low, EEPROM -> CMOS)

0129h-012Bh Startup (Autoincremented on every poweron start)

0130h Number of 512k SRAM

0131h Number of 512k Flash

0132h/0133h BIOS Version (V1.4 => [0132h]:= 4, [0133h]:=1)

0134h/0135h BOARD Version (V1.5 => [0124h]:=5, [0125h]:=1)

0136h BOARD TYPE (‘M’=PC/104, ‘E’=Euro, ‘W’=MSWS, ‘S’=Slot, ‘C’=Custom)

0137h CPU TYPE

(01h=ELAN300/310, 02h=ELAN400, 03h=486SLC, 04h=486DX, 05h=P5).

0200h-03FFh Keymatrix-Setup data

0200h-027Fh Keymatrix Table

0400h-07FFh Free for Customer’s use