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AuthorTopic: A500/GVP HD8+ issues.  (Read 1558 times)

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Offline scuzzb494

Re: A500/GVP HD8+ issues.
« Reply #15 on: April 16, 2022, 11:07:04 PM »
A530T yummy ... Wouldn't be without mine. Anyhoo, biggest problem with the GVP sidecars is the power supplies. I have quite a few and the capacitors inside just ooze and die. So its worth checking if you have an original PSU. Also check the connector cus they can be a problem inserting and I've had them with damaged connectors, especially at the ends. And also worth getting a ground if you don't have one fitted. Poor connectivity can cause consiiderable issues and power.


Simply the best.

Offline darksun9210

Re: A500/GVP HD8+ issues.
« Reply #16 on: April 22, 2022, 04:40:12 PM »
AHA! the Supra Turbo28 runs fine with the GVP HD8+, but it limits the ram to 4meg as it needs some of the addressing for its sram cache.
sure it's not 030 fast, but it's a 4x uptick on stock... that was my config - still able to hold it's own vs all my friends who got A1200's and then fast ram upgrades...

A500 Vampire2/minimegachip/lazarus/indyECS, (+GVP A530,SupraTurbo28,GVP HD8)
A600 Vampire2/604n/subway/IndyECS, (+ACA630)
A1200 Vampire2/subway/IndyAGA, (+Bliz030+scsi)
A1200 Icedrake/indyAGA
A1200 BlizPPCscsi/Bvision/subway
A3k C=040/CV64-3D/Xsurf100+RRoadUSB/Zoram256/acard scsi-ide-CF/IndyECS,
A4k CSMk3-060/CV64-3D/Xsurf100+RRoadUSB/Bigram256/IndyAGA, mediator+pci cards
CD32 TF330/IndyAGA
Plus an SGI O2 & consoles.

Offline Michael_D

Re: A500/GVP HD8+ issues.
« Reply #17 on: June 29, 2022, 12:18:36 AM »

I used the HD8+ and M-Tec030 with 4MB 32bit-ram (no DMA, no Autoconfig) - long time ago.  :)

Try the following:

DMA: set DMA-Mask in RDB to 4FFFFE for every partition - DMA into 16bit-ram only and HD8+ should work with other turboboards
« Last Edit: June 29, 2022, 12:27:00 AM by Michael_D »