30 PIN RAM - PC SIMMS CONNECTED TO COMMODORE 64c
The original idea & plans for this came from
Maciej Witkowiak web site. And this inspired me to build a 72 pin SIMMS version.

When I built this project I did not want to modify my C64c, So I installed two machined Pin IC-Sockets (18-PIN type) and soldered them to the C64 Motherboard, so i can still use two of the normal RAM chips if I desire.

To build the interface you need 3 things:-

(1) An IBM 30-PIN SIMM Socket (Can be de-soldered from any old 286,386, 486 etc..)

(2) 21 Wire Ribbon cable (I used an old 40 Wire IDE HD cable)

(3) Two 18-way Machined Pin IC Sockets. [Solder the 21-Wire Ribbon cable to this)

SIMM = Stands for SINGLE IN-LINE MEMORY MODULE.

These are mainly found in IBM Compatible Computers in sizes:-

286, 386, 486 = 30 PIN SIMMS

486, Pentium 1 = 72 PIN SIMMS

Pentium 2, Pentium 3 = 168 PIN SIMMS

Pentium 4, AMD64 = 184 PIN SIMMS

Click here to view the 30 PIN SIM Project

Click here to see the C64 RAM chip pin layout

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