Project updates

what happened recently

FPGA revision 2 binaries available

posted Mar 19, 2017, 4:14 AM by andi6510 The FPGASID Project

After the first reports from the Alpha testers I prepared a bugfix release to fix the following issues:
  • POTX and POTY had been swapped.
  • Source selection of the EXTIN input was not matching the register specification.
  • Test bit handling was fixed.
  • Fixed advanced digi playback as used in Coma Light.
  • Adressing at DE00 collides with external modules such as the 1541U2 or some midi modules.
    Note: This fix is still a workaround because it disables all reading from the DE00 address range. A final fix will be available in the next hardware release.

The new FPGA binaries are available on the Download Page together with the flashing tool and instructions how to do the flashing.

Alpha Testers have received their devices

posted Mar 12, 2017, 2:10 PM by andi6510 The FPGASID Project   [ updated Mar 12, 2017, 2:12 PM ]

All participants in the alpha test phase have now received their devices and have started to check the FPGASID functionality. During this phase we will collect all smaller and bigger problems that occur and find appropriate fixes for them. Based on this experience we will be able to release an improved version with all the bug fixes included.
The general feedback is very positive so far.

First lot arrived today!

posted Feb 21, 2017, 11:36 AM by andi6510 The FPGASID Project

Today I received the first lot of FPGASID_proto1 boards from our manufacturer:
















The first lot! As you can see through-hole parts will still have to be mounted manually.


Once everything is built up, flashed and tested, these boards will get shipped to the Alpha-Testers. These poor ones are already waiting for so long now to finally get their test objects...

Finally the first lot of FPGASID_proto1 is being built

posted Jan 29, 2017, 7:50 AM by andi6510 The FPGASID Project   [ updated Feb 2, 2017, 12:52 AM ]

Before the Christmas holidays I received a first sample of the FPGASID_proto1 boards from our manufacturer. The power-up of this board took quite some time. Maninly caused by a bigger issue with a CMOS-latchup of the output amplifier. But in the end this issue could be solved. After fixing some smaller FPGA bugs the prototype is now up and running. There is no reason why it should not go to the Alpha testers for detailed testing now.
Yesterday I gave the GO to our manufacturer to build up the complete lot of FPGASID_proto1 boards. This will take until mid of February.

FPGASID_proto1 plays in STEREO [video]

posted Jan 29, 2017, 7:40 AM by andi6510 The FPGASID Project

The new prototype platform has one main advantage over the old evaluation board based prototype. It does support stereo tunes! FPGASID now incorporates two full SID chips that can be programmed individually. That means 6 voices are available in total, doubling the capabilities of the original SID chip!

A wide support by existing software is assured through a programmable address location of the additional SID.

Here is a short video demonstrating the stereo capability:














This video shows FPGASID playing the stereo SID-tune "Blank Page" by Owen Crowley

FPGASID_proto1 alive! [video]

posted Jan 4, 2017, 2:47 AM by andi6510 The FPGASID Project   [ updated Jan 4, 2017, 2:50 AM ]

It was a tough job to power up the first FPGASID_proto1. But now it is done:

FPGASID_proto1 powered up


Another major milestone has been passed!

PCA sample arrived

posted Dec 22, 2016, 3:43 AM by andi6510 The FPGASID Project

Today the first sample PCB with mounted SMD parts was delivered by the manufacturer!

The next steps are:
  1. Thorough visual inspection of the mounted parts
  2. Mounting of remaining THT parts
  3. Startup:
  • Smoke test - as long as the smoke stays in, everything is fine ;-)
  • Flashing of FPGA and CPLD
  • Various functional tests


top side














bottom side




FPGASID_proto1 PCBs have arrived

posted Nov 30, 2016, 5:12 AM by andi6510 The FPGASID Project

The PCBs have arrived: Thomas checked them for correctness and found only minor issues. Nothing that would stop the production. He also made a first mechanical compatibility check with some C64 main boards.

Our manufacturer has received the go for PCB assembly now!


Upcoming steps: We expect to get a first sample by mid of December. This will go through a turn-on procedure to check the functionality before the full lot will be assembled.


FPGASID_proto1 PCB as being checked for mechanical compatibility in a C64 main board.

Production of FPGASID_proto1 started

posted Nov 14, 2016, 12:01 AM by andi6510 The FPGASID Project

Yesterday the final production data for our next prototype was sent to the manufacturer. This means that the production is starting today!

Here are the latest pictures showing the final design.





Alpha Phase Update

posted Nov 4, 2016, 10:45 AM by andi6510 The FPGASID Project

The alpha test-phase has started with quite some success. Within a few days I found about 15 persons willing to test a FPGASID. Another significant number of people are on a waiting list, still hoping to get one of the leftovers.

Thomas is about to finalize the PCB design. A partner for manufacturing has been found. All semiconductor and mechanical parts have been ordered and the last ones arrived from China today.

I will write detailed updates more frequently in the German retro-computing Forum 64 for those who can read and understand German.

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