F2R16 - Flash based ROM Replacement for Amiga Computers

Project Status: 
released

F2R16The 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.

The design is pretty straight forward. It uses a 2-8Mbit TSOP-I flash device of the 29Fxxx series and adapts it to the 27Cxxx pinout. WE# and RST# which do not exist in the 27Cxxx pinout are wired to a header to allow programming on a TL866 using the F2R16-PROG adapter.
When using a 29F800 flash ROM, A18 can be used to select the active 512KB bank (useful for dual kickstart configurations)

A2000

Design Files
Schematics: 
Filed under: 

Comments

Looking for 2 for my Amiga 1200 if possible?

The boards are currently out of stock. I am building more and the next batch should be available around the end of May.

Excellent to hear more are being made (End of may is getting closer :) )
Do the boards include components? or just the board?
I could use a Kickstart Switcher for A2000. Have original ROMs KS1.2,1.3,& OS3.1
Please notify when more are available. Canadian Buyer, so hoping you sell/ship to Canada.

This batch is for fully assembled boards with 4Mbit chips as soldering the TSSOP flash by hand is challenging without the proper equipment. We have not seen any demand for bare PCBs.
We ship internationally.

How would I order 2 for an amiga 1200 for delivery to the UK? I contribute to an open source amigaos implementation and would love to use something like this to test our rom images on real hardware.

Do you have any plans for doing a "dual chip" version suitable for a1200's?

Is there a version that uses pass through type connections to the socket so it can have other boards piggyback it? I would need that for my ATA controller.

Also - do you have any plans for a version with an easier to program interface? If there was some way to just hook it up via usb, or similar and dump the roms into it ... it would be perfect.

All the 32-bit amigas (including the A1200) are supported by using two F2R16 and splitting the ROM image accordingly.

Pass through is possible, but not available at this time.
Regarding the programming interface, I could not find anything that is cost effective and small enough to fit into the socket (especially on the A1200 where the two sockets are side by side)