Want to Buy - 4 or 8mb GVP ram stick

[kipper2k]

Hi all,

I have a GVP accelerator with 4mb ram that i need to get up to at least 8mb to use WHD on it,

Anyone got a 4 or 8mb GVP stick of ram for sale.


thanks

[cpiac64]

i need more info, structure, pin, edo and more?

[Zetr0]

@Kipps

The GVP RAM SIMM's only came in 1,2 4 and 16 - as far as I know there were no 8MB SIMM's made.

GVP RAM SIMM's are 64pin and proprietary - not the same as Apples 64PIN SIMM standard

I did some buzzouts and for 4MB (i need to update this) its easy to adapt a 72pin SIMM via a piggy back and hot glue - however its not going to fit in a destktop.

[kipper2k]

Originally Posted by Zetr0

@Kipps

The GVP RAM SIMM's only came in 1,2 4 and 16 - as far as I know there were no 8MB SIMM's made.

GVP RAM SIMM's are 64pin and proprietary - not the same as Apples 64PIN SIMM standard

I did some buzzouts and for 4MB (i need to update this) its easy to adapt a 72pin SIMM via a piggy back and hot glue - however its not going to fit in a destktop.

Thanks Zetr0.

I'd like to take a peek at the setup, if i could convert a 16mb simm that would be ideal. Gotta love a challenge

@cpjac64.

The simms i need are the earlier Simms that are 64 pin

[cpiac64]

ok i have more 72 pin

Zetr0 have you a schematic for convert 72 to 64 pin?

[cpiac64]

i look the pinout and in effect is simply, the first 4 pin and the last 4 are not used in gvp sram 4 mb

_http://www.accutekmicro.com/pdf/SRAM%20Pinout%20Chart%2011-09.pdf

[kipper2k]

Originally Posted by cpiac64

i look the pinout and in effect is simply, the first 4 pin and the last 4 are not used in gvp sram 4 mb

_http://www.accutekmicro.com/pdf/SRAM%20Pinout%20Chart%2011-09.pdf

Is the GVP ram JEDEC standard though ?

[cpiac64]

the ram in your hand have a serial number or other for more info and compatibility

[Allen1]

Just being nosey as usual but is the ram 64 or 60 pin like the fleabay ones here

[Zetr0]

the GVP RAM is its own proprietary 64 pin design, its not compatible with any other 64PIN SIMM technology that I am aware of.

I have some research in this area - with a view to make compatibles - but 4MB is pretty pathetic to be honest, I will be sourcing a 16MB GVP SIMM when funds/pocket money/wifie allows =)

[cpiac64]

http://www.ftp.uni-erlangen.de/pub/a...d/gvpsim64.lzh

[Zetr0]

@cpiac64

my thanks for the link, this proves helpfull for the 4MB SIMM's

now to get my hands on a 16MB one, although I may not need it as all the address lines are detailed in the schematic =D

My hope is to build / have built much cheaper (and faster) 16MB compatibles

[kipper2k]

I broke down and bought a 16mb one, mabbe i'll map it out

[Zetr0]

Originally Posted by kipper2k

I broke down and bought a 16mb one, mabbe i'll map it out

weakling.....

let me know how it goes =D