What is it?

Flash-based HN62402 ROM and 27C400 EPROM emulator for vintage computers and arcade machines.

Why did you make it?

The Amiga, like many other computers of the late 80s, uses 16-bit wide mask ROMs to store the machine firmware. Unfortunately, the pinout of these ROMs is incompatible with the JEDEC defined EPROM pinout. Memory manufacturers produced "ROM compatible" EPROMS like the 27C400 to allow development and quick turn manufacturing. These EPROMs are however becoming quite hard to find and still require a UV lamp to erase the chips. F2R16 brings all the benefits of modern flash memory technology to any platform designed to use these obsolete devices.

Programming the F2R16

The F2R16 requires a programmer that can support the 29Fxxx series of flash devices. A simple adapter can be hand wired for programmers with a 48-pin socket.

When using the popular TL866 programmer, it must be equipped with both the TSOP-48 adapter and the F2R16-PROG adapter (the PCB for the programming adapter is available as a product option for $9.95). A jumper wire is also required to connect WE#, RST# between the adapter and the F2R16. The A18 signal must also be connected when using 29F800 devices.