DL2DW's remake of REX 9628 Extern-Kernal II-8 clone card
Seems that DL2DW deleted them from his personal blog, so I'll put them available here again as permitted by CC BY-NC-SA license.
Google translation of original German manual:
[Package label]
EXTERNAL KERNAL 8 9628 For all Commodore C-64 and C-128 in 64'er mode
- for up to 8 operating systems at the expansion port
- Executable with REX DOS, Prologic DOS, Speeddos, etc.
- on 2 sockets for 2764-27256
- with RESET button and GAME STOP SWITCH
- can be switched off in terms of hardware
- especially favorable for C-64 II and Aldi C-64
[Manual] EXTERNAL KERNAL 8 9628
On this board, "EXTERNAL KERNAL 8", can accommodate up to 8 kernals operated (2x8 to 32K Eproms). 100% compatible e.g. to all speeders like Speeddos, Rex-DOS, Prologic-DOS etc... Suitable for all 64's, also that of ALDI. Board is at the expansion port operated.
You can use 1 x 2764 or 27128 or 27256 per socket. From each EPROM is addressed in each case the corresponding 8K range.
About the two DIL switches, the respective eighth and slot 1 and 2 are addressed.
The 4-pin DIL switch:
Switch 1 2 3 4 Slot 1 Slot 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
The 10-pin DIL switch:
Switch (on) slot kernal number on EPROM ==================================================== 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 turns Game Stop on or off 10 turns the card on or off
If nothing else is set, the card automatically jumps to the 1st kernal in the 1st slot.
If used EPROM is bigger than 8K, ie. 27128 or 27256, then kernals must be burned one after the other in 8K blocks each. See the following address table:
Kernal addresses 27128 addresses 27256 ===================================================== 1 0000 - 1FFF 0000 - 1FFF 2 2000 - 3FFF 2000 - 3FFF 3 4000 - 5FFF 4 6000 - 7FFF
The EPROMs must match the notch of the socket when plugged in.