Replay2

Replay2

Over the years there has been a lot of frustration about the lack of Replay boards. The main issue was the lack of quality control on components from China which caused a lot of rework effort. In retrospect, we should probably have thrown these away and built new...
ALICE decap and imaged

ALICE decap and imaged

We commissioned the decap and scanning of Alice, probably the most important custom chip in the Amiga. Thanks to John Hertell for the device, and to John McMaster for the decap and scan. Here is the image data in full :...
Replay 68060 daughterboard

Replay 68060 daughterboard

The layout for the Replay 68060 board is complete and has been sent for manufacture. It adds 256MB of local RAM, USB, Ethernet, RTC as well as additional Midi and LED IO connectors. The picture below is a quick mock-up to see if the components actually fit 🙂  ...
More recovered Atari documents

More recovered Atari documents

Still working on reformatting the archive, hopefully Christian well get some time to tidy up the PDFs. Here’s the unsorted ones I extracted. I’ve contacted the original tool vendor, just in case they will help us with the recovery process.  ...
Back to school, and Atari die shots….

Back to school, and Atari die shots….

Well, summer is now over and it’s time to crack on with the FPGA work. I’m still busy repairing the last few boards, and work is well under way on the daughterboard and new production run. I’ve been chatting with a couple of guys over on atari-forum...
Server update

Server update

I’m starting the work on updating the website and servers. The developers SVN will be off line for a few moments today. /Mike

Forum down (Now fixed)

You may have noticed the forum is down. This appears to be a problem with the hosting company after an update. I have run a full back now and we are working on it …. … And it’s all ok again. Happy Friday!

Hardware stuff

The forum is really the place to see regular updates, but I thought it was time for a summary here. The Amiga code is pretty stable. Work is being done to add RTG interlaced modes and increase CPU performance further, but the main focus at the moment is on hardware....
Amiga AGA core stable release

Amiga AGA core stable release

I’ve released a new version of the Amiga core (svn.fpgaarcade.com). New features : 48M XRAM mapped as Chip and all chipset DMA pointers support 64M addressing (optionally enabled in OSD / .ini file) CPU cache stable – 2 way I + D with full snoop. ~16000...
Cache and RTG operational in Amiga core

Cache and RTG operational in Amiga core

A lot of work has been done both on the CPU to increase compatibility, and the core to get the cache working and timing closure. The design is completely constrained and this results in a very stable platform Latest features: 2K Instruction plus 2K Data cache with...

More boards on final test

Taking a quick break from the Amiga core development to ship some hardware. Workbench is full, this is the overflow storage! (These are all going to the distributors. If you were on the original list please email me. I also have boards at reduced cost for developers...

Amiga RTG (Graphics card) working and in Beta

The latest Amiga AGA core is in beta with support for P96 compatible RTG. It also includes a hardware blitter engine which is used by the card driver to speed up window movements.   There is still work to do increasing the pixel clock, but it’s nice to see these...

Amiga roadmap and DDR memory fun

Time for another update. Sometimes it seems things go a bit quiet here – while it’s true September is a busy month with my other (money earning) activities, there has been a lot going on with Replay. I’ve just finished the tweaks for the DDR...
Amiga core update – Blitter issues and chipset timing

Amiga core update – Blitter issues and chipset timing

The AGA core is pretty stable now, but one issue which has been haunting me for ages is some blitter operations go wrong and leave garbage on the screen. I’ve been working with Jim Drew, who pointed me at some source code released by DMA designs for Menace...

Libs and Pacmans

I’ve been working on moving the existing (old) cores like Scramble and Asteroids over to the new Replay framework. While I was at it, I tidied up the library wrapper which has made the “plumbing” a lot simpler. I’ve started documentation and...
Amiga core update

Amiga core update

I made a few minor improvements to border sprite behaviour (fixes Banshee AGA). The core is in the Amiga news thread in the forum. I intend to get the release SVN area sorted out in the next day or so…

Back from holiday

Right, returned from a brief holiday. I’ve moved all the CAD projects and libraries over to my internal SVN repository. This was necessary to sync the work between the workstation and laptop, so I can get the daughter board and AGA debug board out to production....
Amiga core update

Amiga core update

I’ve been testing a new version of my Amiga AGA core. It’s checked into the private repository. I’m working this week to make binary releases (and source ASAP) on the public mirror.   The MIST AGA project has received some great updates recently, and...

Survived the worlds biggest party

Well, just about. Glastonbury was amazing, but now I’ve sobered up, flown home and I have been busy testing boards all day. I received an update from the Mist guys (we work on the 68K CPU together) and have updated the Amiga core. Still some issues, but moving...

Taking a short break

I’m off to a music festival in England (Glastonbury) today and I’ll be out of email contact for a few days. You can see some pictures from last year here : http://www.glastonburyfestivals.co.uk/gallery/ Back to shipping boards, finishing this website and...