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DUAL-PORT STATIC RAM

A project log for 8-Bit Reviver

An Arduino Mega2560 with DIP28 adapter to emulate 27C series eeprom up to 64KB.

Bart van der WeeBart van der Wee 07/02/2014 at 03:410 Comments

Having decided that the direct-connected mega2560 will be too slow, I will change tack and utilise the above dual-port SRAM module. The Arduino Mega2560 will contain the .hex file within it's flash memory and at power-on will transfer this to the DP SRAM. There will be a flatribbon cable+dip28 socket to connect to the 80C552 board - or any similar embedded cpu that uses this is similar eeprom.

The SRAM will be treated as ROM by the device being 'revived' - with some creative coding it could be possible to modify code on-the-fly via a serial console back into the Arduino Mega2560.

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