Model 200 RAM

• PCB by Steven Adolf
• Parts

(1) TC551001 128kB SRAM

(1) 74AHC1G08 AND gate

(1) 0805 1uF ceramic cap

(29) round pins

The parts in the DigiKey cart above are not yet verified working/correct. - Ram might not work - Pins might not be optimal

This is parts enough to build 3 boards because you can't order less than 3 PCBs from OSHPark anyway. But you only need 1 board total per Model 200. The single new board takes the place of both ram sockets. You can reduce the parts quantities in the DigiKey order.

There will be a few unused pins left over. The order is for 3 sticks of 32 pins each. You will break away and use 14 + 14 + 1 pins from 1 stick for each ram module.