Great work! What a nice design!
As an owner of an "original" AA3000 I can give you some hints:
The blank-signal for the videoconnector is unconnected on the original AA3000-MoBo. Check the A4000 schematic to do the same "conversion" of the Blank-Signal to Lisa with the Videoport.
It seems that you integrated an upgraded version of the Multivision Flickerfixer. This Flickerfixer suffers from three issues: It can handle only PAL modes, it uses a discrete DAC to get RGB and the original schematic uses this ugly NE564-PLL loop, which needs tuning. I used the same flickerfixer as a starting point for my one . I fixed the PAL/NTSC-Mode issue by using a "modern" CPLD. The DAC issue was handled by using the same ADV7120 (or BT101) allready populated on the Mobo. Nice side effect: It makes the 74xxx574-buffers unneccessary (U478/479). I replaced the NE564 by a ICS570-frequency multiplier, which gives exelent clock signals.
Think about an internal SCSI-termination-option. An external one is ugly
Have you done the Adress fix on the Prometheus-PCI? On the Prometheus PCI-schematics X302-A26 is connected to P-AD19 but should be connected to P-AD18. Same with X303-A26: P-AD20 should be P-AD19 !
I see that you used the Altera-Design. I would recomend the Xilinx-Design. The CPLDs are much better available.
A Point of load (POL) module for 3.3v conversion is better than this simple 3.3V regulator. If you connect the 3.3v rail to the PCI-Slots you will need a LOT of power!
I see you missed out the "slot" for this s-shaped fixation of the Daughterboard to the case. This is quite importaint to avoid damage due to inserting and removing cards.
Are you on signal ir irc for some dev-chat?
Best regards Matthias
As an owner of an "original" AA3000 I can give you some hints:
The blank-signal for the videoconnector is unconnected on the original AA3000-MoBo. Check the A4000 schematic to do the same "conversion" of the Blank-Signal to Lisa with the Videoport.
It seems that you integrated an upgraded version of the Multivision Flickerfixer. This Flickerfixer suffers from three issues: It can handle only PAL modes, it uses a discrete DAC to get RGB and the original schematic uses this ugly NE564-PLL loop, which needs tuning. I used the same flickerfixer as a starting point for my one . I fixed the PAL/NTSC-Mode issue by using a "modern" CPLD. The DAC issue was handled by using the same ADV7120 (or BT101) allready populated on the Mobo. Nice side effect: It makes the 74xxx574-buffers unneccessary (U478/479). I replaced the NE564 by a ICS570-frequency multiplier, which gives exelent clock signals.
Think about an internal SCSI-termination-option. An external one is ugly
Have you done the Adress fix on the Prometheus-PCI? On the Prometheus PCI-schematics X302-A26 is connected to P-AD19 but should be connected to P-AD18. Same with X303-A26: P-AD20 should be P-AD19 !
I see that you used the Altera-Design. I would recomend the Xilinx-Design. The CPLDs are much better available.
A Point of load (POL) module for 3.3v conversion is better than this simple 3.3V regulator. If you connect the 3.3v rail to the PCI-Slots you will need a LOT of power!
I see you missed out the "slot" for this s-shaped fixation of the Daughterboard to the case. This is quite importaint to avoid damage due to inserting and removing cards.
Are you on signal ir irc for some dev-chat?
Best regards Matthias
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