14 June 2024, 23:59 | #1 |
Registered User
Join Date: Feb 2015
Location: Norway
Posts: 65
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Amiga 2000 expansion trouble - perhaps solved?
Hi!
Received some new expansion hardware for my Amiga 2000 today. Current configuration is: - 2 MB chip RAM (ACE2b) - GVP G-Force 030 40 MHz accelerator, 16 (now 12) MB RAM - ZZ9000 RTG card - X-surf 100 NIC - Prelude sound card (replica) - MultiFaceCard 3 serial interface Put everything into the computer, turned it on, and were greeted with an expansion board diagnostics screen. It said all cards are working, except one that is defined as shut. Found out this was the ZZ9000 card. After quite a bit of searching and reading, I found something in the GVP manual regarding something called auto-config and an 8 MB barrier. Page 13-14. The TL;DR is that I removed the stick in bank 2 on the GVP card to free up 4 MB in the auto-config range, as the ZZ9000 takes up 2 MB within that range. After removing the 4 MB from the GVP card, everything appear to be happy. I am no longer greeted with the diagnostics screen at boot. Did I solve this properly, or could I do this different in any way? |
26 June 2024, 00:09 | #2 |
Air supremacy
Join Date: Aug 2008
Location: Rijeka Croatia
Posts: 125
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You could remove short (cap) on jumper J12 without removing any sticks. That would, as figure 3.7 shows, map all 16MB into 32-bit extended memory, not using anything from autoconfiguring Zorro 2 area.
ZZ9000 'eats' only 2MB and that leaves you with 6MB address space. In fact, you may try and prepare another SD card with alternate 4MB firmware which would give you few more resolutions and colors in RTG/Picasso mode. Last edited by Lockon; 26 June 2024 at 00:14. |
28 June 2024, 22:13 | #3 |
Registered User
Join Date: Feb 2015
Location: Norway
Posts: 65
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Ah, right! Your suggestion works as well, thank you! Good to have all the RAM back in it.
Still a bit unfamiliar with the technical aspects and limitations around the system. Always good to get some confirmation and additional pointers while learning. |
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