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 » 28 Oct 2015 17:17

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 » 28 Oct 2015 18:08

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: 752
Joined: 11 Aug 2012 18:16
Contact:

Re: Memory Expansion

Post by Dave » 28 Oct 2015 18:19

You're right, no memory, it's "just" a disk drive emulator using CF :-)

Martin A
Posts: 417
Joined: 09 Nov 2013 21:03

Re: Memory Expansion

Post by Martin A » 28 Oct 2015 20:46

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 2280 times
2 chip Memory board
2 chip Memory board
512k ram internal.jpg (73.16 KiB) Viewed 2280 times

Post Reply