Technical data

Utility Software for MS-DOS
94 VIPA GmbH CP486 ⋅ 00/14
5.1.5.3 Example for Generating a Program Memory with EPROMs:
Goal: An EPROM silicon disk is to be generated using two 512KByte EPROMs.
For this purpose, an SRAM disk with two 512KByte SRAMs (4MBit SRAMs) is installed on the
base board. The base board is to be assembled correspondingly and the jumpers set up accordingly
(see HW-description of the base board). C0 0000hex is set up as base address.
The system is booted from hard disk (drive C:). The programs SDROM.SYS, SDRAM.SYS,
FORMATSD.EXE (in the subdirectory C:\SD) and a text editor are required for the generation.
The following lines are input at the end into the file C:\CONFIG.SYS via the text editor:
DEVICE = SD\SDRAM.SYS base=/C0 size=/1024
The system is re-started by pressing at the same time the keys <CTRL>, <ALT> and <DEL>.
At the runup, the system outputs i.a. the following messages:
SILICON DISK installed as drive D:. Vx.y date
RAMDISK STARTED WITH ADDRESS C00000H
In drive D: (SRAM disk) a master for the program memory is generated. For this purpose, the
SRAM-disk must first be formatted by means of the following command:
SD\FORMATSD D: /D:32 /S
Following all the files required on the EPROM disk are copied to this drive D:. Thus, the master for
the EPROM disk is generated and can also be tested. For this, the silicon disk ROM must be
selected on address C00000 in the Setup and the line
DEVICE = SD\SDRAM.SYS base=/C0 size=/1024
must be deleted in the file CONFIG.SYS.