Hi Frank,
first of all: Happy New Year!
I have the MCS-Alpha I and some Dokumentation. Perhaps I can help.
I'm living in Westfalia.
If you want send me a pm please.
All the best
Charly, DL4DBY

http://members.lycos.co.uk/leeedavison/6502/memoryplus/ contains the manual
The "Memory Test Program" on pages 21 - 23 doesn't work if you type it in. I found three scan errors in the listing:
adress "002D" is wrong must be "002C"
In adress "0040" not "A5 D0" but "A5 00"
In adress "00B1" not "F0 ...

Thanks to all - especially to Hans - my "Memory Plus" memory expansion seems to work now. I have adressed the memory to $2000 and I can acces the RAM from $2000 to $3FFF. Also the four EPROM sockets are accessible from $C000 to $DFFF.
Wow - after all these years it is still working!
Thanks again ...

Wow, that is exactly what I need. Although, I wonder why I couldn't find it with my google...
OK thanks alot, Hans. Perhaps I will find the schematic diagram one day - but I hope it will work now.
Many thanks again

Charly DL4DBY

Hello to all,
with my last KIM-1 a few month ago, I received a memory board with 64 x 21L02, a 6522 and five sockets for 24 pin (EP)ROM. The board looks exactly like the KIM with the two Connectors "E1...E22" and "A1...A22".
So, I think it is an expansion-board of 8 KB RAM/ROM for KIM, SYM etc.
It ...

Hi together,
after searching a while and looking around, I received a KIM-1 with a white board Rev. D and a Junior Computer by "Elektor" this christmas.
I just finished typing in the hexcode for "Lunar Lander" from "First Book of KIM" and - yeah, I'm "SAVE"...
Nice to play with the toys from the ...

I'm trying to be more concise, not really working :)
r.

DL4DBY> think there must be a wiring of one connector to enable internal
DL4DBY> RAM.

Well, there's nothing like that mentioned in the User Manual, unless
I've missed or mis-read something.

The only other setups required in the Manual, in ...

I believe PC- power-supply sometimes need a "power good" signal to work right.

No, no, no, no, no. Power good is ALWAYS an output from the PC power supply. One Amiga magazine gets this wrong twenty years ago and people are still quoting it as true.

The purpose of power good is to tell the ...

So far, this seems OK ... But when I continue per UserMan,
and attempt to begin the "Simple Program" (2.4), pressing
[AD] then [0] [0] [0] [2] keys, NOTHING shows up on the
display LEDs.

Hi Mike,
I am not sure if I understood right, but certainly I could give you a few hints:
Is the display ...

I collect SYM-1s for some reason...I have about five of them so far.

Anybody else collect 6502 SBCs?

Toshi

Hi together!
I'm quite new here. In 1978, I started a new hobby: After reading the first "CHIP" I bought a "ALPHA-1" from MCS Berlin. After spending a lot of money in keyboard, video ...