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Join Date: Sep 2008 Location: Somewhere Posts: 215

AA3000+ Amiga 3000 AGA motherboard



AA3000+ Motherboard



AA3000+ is an Amiga 3000 AGA motherboard based on the Commodore AA3000 schematics with some improvements and extra features that were missing from the original AA3000 motherboard, such as the scandoubler / flicker fixer.



The specifications of the AA3000+ motherboard are:

- Amiga 3000 motherboard with AGA chipset

- on-board 68030 PGA CPU and 68881/68882 PLCC FPU running at 25MHz

- DSP processor (AT&T DSP3210)

- CPU slot for A3000/A4000 accelerators

- 16MB Fast RAM using two SIMM modules (no expensive ZIP RAM chips needed)

- 2MB Chip RAM (no expensive ZIP RAM chips needed)

- extended Fast RAM support (up to 64MB?, work in progress)

- extended Kickstart ROM support up to 4MB

- on-board full 24bit AGA scandoubler / flicker fixer

- support for two external video inputs (for example a graphics card and another scandoubler such as Indivision AGA)

- monitor switch between the video inputs, similar to Ratte monitor switch (controllable by software or external switch)

- 23-pin DSUB port for native Amiga RGB video output

- 15-pin VGA port for graphics card or scandoubled / native Amiga RGB video output

- 2x stereo audio RCA jack

- SCSI-II controller (50-pin internal port, 50-pin DSUB external port)

- 880kB / 1.76MB Amiga floppy drive port (34-pin internal port, 23-pin DSUB external port)

- 2x 9-pin DSUB Amiga mouse/joystick ports

- 5-pin DIN Amiga keyboard port

- 25-pin DSUB serial port

- 25-pin DSUB parallel port

- battery backed up clock

- 2x power connectors for fans (1x +5V fan, 1x +12V fan)



Pictures of the motherboard PCB:









Assembled AA3000+ motherboard:







AA3000+ Firebird Daughterboard



I have also designed a daughterboard for the AA3000+, called the Firebird.

The Firebird has support for 3.3V and 5V PCI cards, the PCI support is based on the Prometheus PCI bridge by Matay.



The specifications of the Firebird daughterdboard are:

- 3x PCI slots (3.3V and 5V cards)

- 4x Zorro III slots

- 1x AGA video slot



Picture of the Firebird PCB:





Assembled Firebird daughterboard:





AA3000+ ready to use





The picture gallery .



The motherboard is working otherwise but the extended Fast RAM support is still work in progress and requires me to do another revision of the motherboard.



If you have some features that you would like to be included to the next motherboard revision, please let me know. Here is a project I've been working on for the past six months.AA3000+ is anmotherboard based on the Commodore AA3000 schematics with some improvements and extra features that were missing from the original AA3000 motherboard, such as the scandoubler / flicker fixer.The specifications of the AA3000+ motherboard are:- on-board 68030 PGA CPU and 68881/68882 PLCC FPU running at 25MHz- CPU slot for A3000/A4000 accelerators(no expensive ZIP RAM chips needed)(no expensive ZIP RAM chips needed), similar to Ratte monitor switch (controllable by software or external switch)- 23-pin DSUB port for native Amiga RGB video output- 15-pin VGA port for graphics card or scandoubled / native Amiga RGB video output- 2x stereo audio RCA jack- SCSI-II controller (50-pin internal port, 50-pin DSUB external port)- 880kB / 1.76MB Amiga floppy drive port (34-pin internal port, 23-pin DSUB external port)- 2x 9-pin DSUB Amiga mouse/joystick ports- 5-pin DIN Amiga keyboard port- 25-pin DSUB serial port- 25-pin DSUB parallel port- battery backed up clock- 2x power connectors for fans (1x +5V fan, 1x +12V fan)Pictures of the motherboard PCB:Assembled AA3000+ motherboard:I have also designed a daughterboard for the AA3000+, called the Firebird.The Firebird has support for 3.3V and 5V PCI cards, the PCI support is based on the Prometheus PCI bridge by Matay.The specifications of the Firebird daughterdboard are:- 3x PCI slots (3.3V and 5V cards)- 4x Zorro III slots- 1x AGA video slotPicture of the Firebird PCB:Assembled Firebird daughterboard:TheThe motherboard is working otherwise but the extended Fast RAM support is still work in progress and requires me to do another revision of the motherboard.If you have some features that you would like to be included to the next motherboard revision, please let me know.