26 Nov
2005
26 Nov
'05
6 a.m.
I've got 7 MK4801AN-1 (also marked 4118A) memory chips, 24-pin DIP's.
Not sure what they go in, but if you can tell me where you want
to plug them into, I'll send 'em to you gratis.
Tim.
26 Nov
26 Nov
9:49 a.m.
Am zaterdag, 26.11.05, um 15:00 Uhr (Europe/Zurich) schrieb Tim Shoppa:
I've got 7 MK4801AN-1 (also marked 4118A) memory chips, 24-pin DIP's.
Not sure what they go in, but if you can tell me where you want
to plug them into, I'll send 'em to you gratis.
They go into the ZX81........
I don't need them,as my ZY81 has already twice the normal amount of
RAM !
Jos
10:25 a.m.
On Sat, 26 Nov 2005 09:00:29 -0500
shoppa_classiccmp at trailing-edge.com (Tim Shoppa) wrote:
I've got 7 MK4801AN-1 (also marked 4118A) memory chips, 24-pin DIP's.
Not sure what they go in, but if you can tell me where you want
to plug them into, I'll send 'em to you gratis.
Tim.
That is a fairly useful SRAM part, with footprint similar to an EPROM. Nice
chips for small embedded projects.
4:25 p.m.
I've got 7 MK4801AN-1 (also marked 4118A) memory chips, 24-pin DIP's.
Not sure what they go in, but if you can tell me where you want
to plug them into, I'll send 'em to you gratis.
IIRC, 1K*8 SRAMs, something close to Jedec pinout (like most EPROMs).
They were used in the Nascom (at last the Nascom 2). In fact at one point
there was a shortage of said chips in the UK, so Nascoms were sent with
the bare minimum of such RAM (I think just the RAM for the video
circuitry), but with a 'free' 16K DRAM board.
-tony
6971
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6972
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3 comments
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participants (4)
-
ard＠p850ug1.demon.co.uk -
chenmel＠earthlink.net -
jos.mar＠bluewin.ch -
shoppa_classiccmp＠trailing-edge.com