Extern-Kernal 8 - REX 9628

Item number: HW0108

Kernal EPROM card

  • For up to eight operating systems on one cartidge
  • With On/Off switch
  • With reset button
  • Tenfold DIP switches for operating mode
  • incl. Germaninstructions for DIP switches
  • Used

(Illustration similar)

Category: Commodore 64/128


including19% VAT., plus shipping (Maxibrief)

Not available now!


Description

On this board, "EXTERN-KERNAL 8", up to 8 operating systems can be operated (2x8 to 32K EPROMs).
100 % compatible with all speeders like Speeddos, Rex-DOS, Prologic-DOS and so on. Fits into all Commodore 64 (including ALDI). The board is operated on the expansion port.

You can use 1 x 2764 or 27128 or 27256 per socket. The respective 8K range is addressed by each EPROM.

Via the two DIL switches, the respective eighths as well as slots 1 and 2 can be addressed.


4-pin DIP-Switch:

Switch 1 2 3 4 Type/Socket 1 Typ/Socket 2
=====================================================
on off on off 2764 2764
on off on off 27128 27128
off on off on 27256 27256
on off off on 2764/128 27256
off on on off 27256 2764/128


10-pin DIP-Switch:

Switch (on) Socket Operating System
==================================================
1 1 1
2-1 1 2
3-2-1 1 3
4-3-2-1 1 4
5-4-3-2-1 2 1
6-5-4-3-2-1 2 2
7-6-5-4-3-2-1 2 3
8-7-6-5-4-3-2-1 2 4

9 switches on/off Game-Stop
10 switches on/off the cardridge

If nothing else is set, the card automatically jumps to the first operating system in the first slot.


If EPROMs are used which have more than 8K, ie 27128 or 27256, the operating systems must be burned consecutively in 8K blocks. Please see the following address table:

Operating System Address 27128 Adsress 27256
====================================================
1 0000 - 1FFF 0000 - 1FFF
2 2000 - 3FFF 2000 - 3FFF
3 4000 - 5FFF
4 6000 - 7FFF

The EPROMs must coincide with the notch of thesocket when inserting.


Shipping weight: 0,18 Kg
Product weight: 0,03 Kg
Dimensions ( length width height ): 16,00 10,00 2,50 cm

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