Acorn Electron Core

Acorn Electron Core

A little over 34 years ago, Acorn Computers Ltd released a budget version of the BBC Micro, the Acorn Electron. For a time it was apparently the best selling Micro in the United Kingdom, although in more recent years the Electron seems to be overshadowed by its big...
New Amiga Core

New Amiga Core

A new Amiga core was just released with a fix on the RTG interrupt + new RTG driver that handle the interrupt correctly....
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...
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...
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…
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...