Memory Expansion

You want to buy,sell or trade Memotech Stuff?
Post Reply
jonriglar
Posts: 20
Joined: 14 Aug 2015 08:46

Memory Expansion

Post by jonriglar »

I've inherited another MTX, this one is a MTX 512 but fitted with a 32K MTX500 mainboard.
I am sure I read somewhere that one of you fine chaps could sell an internal memory expansion card?
Are those still available - can anyone please point me in the right direction in terms of who to contact and price?
Thanks
Jon
jonriglar
Posts: 20
Joined: 14 Aug 2015 08:46

Re: Memory Expansion

Post by jonriglar »

Hi Dave
Thanks. The CFX is 'just' (I say that without meaning any offence!) an interface for Compact Flash program storage? Or does it have memory on board as well?
Regards
Jon
User avatar
Dave
Posts: 832
Joined: 11 Aug 2012 18:16
Contact:

Re: Memory Expansion

Post by Dave »

You're right, no memory, it's "just" a disk drive emulator using CF :-)
Martin A
Posts: 483
Joined: 09 Nov 2013 21:03

Re: Memory Expansion

Post by Martin A »

Amongst all it's other goodies REMEOrizer also comes with Ram

http://www.nyangau.org/rememorizer/rememorizer.htm

If you have the parts, building a ram expansion's not that hard!

You'd need static ram chip 32,128 or 512k a GAL or similar, some Matrix board and an edge connector. I put this one together for testing CFX

a 20 pin GAL would do for 32k or 128k. In order to make the 512k available on both Basic and CPM I had to use a 24 pin part, the smaller ones just couldn't hold enough permutations
Pretty simple to wire
Pretty simple to wire
512k solder side.jpg (92.24 KiB) Viewed 4379 times
2 chip Memory board
2 chip Memory board
512k ram internal.jpg (73.16 KiB) Viewed 4379 times
Post Reply