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Amiga AGA core stable release
Fri, 26 Feb 2016
MikeJ
I've released a new version of the Amiga core (). 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 AIBB Dhrystones Filtered & Mono audio RTG over analog/DVI/HDMI with hardware sprites and dedicated blitter engine.  1024x768 at 16...
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Cache and RTG operational in Amiga core
Thu, 21 Jan 2016
MikeJ
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 full chipset snoop on both.Performance is around 11.3 mips / 10800 dhrystones with sysinfo 4.0. The RTG...
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More boards on final test
Thu, 26 Nov 2015
MikeJ
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 still)...
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Amiga RTG (Graphics card) working and in Beta
Sat, 21 Nov 2015
MikeJ
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 modes working cleanly over DVI/HDMI. Thanks especially to Jim Drew for work...
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Amiga roadmap and DDR memory fun
Wed, 7 Oct 2015
MikeJ
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 controller needed for the vector games (Asteroids and StarWars) and the RTG graphics mode for the...
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Amiga core update - Blitter issues and chipset timing
Mon, 7 Sept 2015
MikeJ
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 - Amiga Format issue 8 or 9 I think :  This was a fairly...
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Libs and Pacmans
Sun, 6 Sept 2015
MikeJ
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 work on a webpage for this. I also realized that my Pacman core was a little dated, other people...
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Amiga core update
Tue, 21 Jul 2015
MikeJ
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.....
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