Looking to buy vintage ram

[gerrydoire]

Looking to buy 27 chips of the following name brand and type:

AM9101DPC/P2101A-2 AMD 256X4 RAM

To be used in a IBM 5150 A Model,
the chips soldered to the motherboard
are this type, so it seems only
appropriate to fill the sockets
with the same.

Ideally would be nice to get 27 chips, but
will take whatever is available.

MSG ME!

 

[Chuck(G)]

Are you certain about your information? The 9101 is a 256 bit x 4 static SRAM. That is, two of them will get you 256 bytes of storage.

My A-series 5150 used an array of 2117/4116 type 16Kx1 DRAM.

 

[glitch]

Not likely that there's a pile of 2101 256x4 Static RAMs in your 5150. That would have been very low density for static RAM even then. The 2101 is a very old design, and most of the later use it saw was the refined low-power CMOS version with battery backup for NVRAM (apparently video games and pinball machines used it).

 

[gerrydoire]

Check this link to see if I'm on the right track for memory:

http://www.americanmicrosemi.com/information/spec/?ss_pn=AM9101DPC

 

[joekster]

The ibm 5150 model a takes 4116 dram (16kbit x1). Pretty sure I've got 27 of them, but doubt that they're the same brand as your existing ones.

 

[gerrydoire]

The ibm 5150 model a takes 4116 dram (16kbit x1). Pretty sure I've got 27 of them, but doubt that they're the same brand as your existing ones.

See if you have any AMD chips.

 

[modem7]

An AMD chip used in early versions of the 16KB-64KB 5150 motherboard is the AM9016DPC.

See [here]. The faster versions, AM9016E and AM9016F, can be used instead if you want to stick with AMD.

 

[joekster]

Sorry, no AMD chips, only Mostek.