Technical data

BIOS and System Programming
CP 486 ⋅ 00/14 VIPA GmbH 59
In the bank field the base address of the PLC bank can be set from 0 ... 248 in steps of 8. The
specified area is activated immediately at the start up of the CP486 and is available at the PLC side.
By means of the SETUP field "disk drive A" the user is able to specify further drive types (also a
silicon disk) as boot drive for drive A. In order to take an effect, a floppy disk drive for A has to be
selected in the second part of the SETUP.
Different silicon disks can be installed at the CP486, whereby the chip silicon disk and the memory
card silicon disk are available directly on the module (optional):
- The chip silicon disk (IC3,IC4) is set hardware-specific to the address C00000 hex. It can be
assembled with SRAMs, EPROMs or PEROMs.
- The memory card silicon disk (memory card plugin socket) is set hardware-specific to the
address 800000 hex. Memory cards are available as SRAM cards and OTP cards.
- Further silicon disks are available as additional plugin boards. The addresses of these silicon
disks can be specified on the additional boards.
One of these silicon disks can be used for booting the system. The user has to specify the address
and the storage type - RAM or ROM - of the requested boot drive:
- ROM on base address 80 0000 hex memory card silicon disk or add. silicon disk board
- RAM on base address 80 0000 hex memory card silicon disk or add. silicon disk board
- ROM on base address C0 0000 hex chip silicon disk or add. silicon disk board
- RAM on base address C0 0000 hex chip silicon disk or add. silicon disk board
If in addition a floppy disk drive is to be used, it must be redirected to the second floppy disk drive.
For this purpose, the jumper field A/B on the disk interface board must be set to B and the disk
drive B in the BIOS-Setup.
Examples:
VIPA-SETUP Quadtel-SETUP
Boot from 1.44MB disk: Disk 1.44MB
Boot from EPROM chip silicon disk ROM on C00000 1.44MB
Boot from SRAM memory card silicon disk RAM on 800000 1.44MB
However, precondition for boot from silicon disk is the existence of a bootable silicon disk. When
leaving this SETUP window with the <ESC> key, all settings will be stored (attention: the password
will immediately be taken over and stored, if the ENTER key is pressed).