Hi folks,
I have just gotten a TF536, which I've installed into my A2000 (rev 6.2). It's working well and I'm very pleased with it. Many thanks to its creator for a speedy but affordable accelerator.
There is however one issue that has came up. I have an A2091 SCSI card (with 6.6 ROMs.) It works fine on its own, but it doesn't agree with the TF536. Here is what happens with various different configurations:
A2091 autoboot jumper enabled, SCSI hard drive connected: System does flashing colourful bars, then black - does not proceed - not even the early boot menu from left+right mouse works.
A2091 autoboot enabled, SCSI hard drive disconnected: boots fine.
A2091 autoboot disabled, SCSI hard drive connected, A2091HD driver in SYS:Expansions: boot hangs early in AmigaOS loading. (Mouse remains responsive.)
A2091 autoboot disabled, SCSI hard drive connected, no A2091HD driver in SYS:Expansions: boots fine.
Jumpering the A2091 for either 2MB, 1MB, 512KB, or 0 of its onboard fastram has no effect.
The presence of a hard drive plus the loading of a driver for the card seem to be the necessary and sufficient grounds for the system to hang. The fastram onboard the card works fine.
I understand the A2091 is notorious for disagreeing with accelerators so I am not surprised it is not working right, but if anyone has any ideas on how it might be made to work I would be much obliged. Alternatively if someone knows another SCSI or IDE card (I am hoping to run two CF cards and a CD drive) which works well with the TF536 then that would be another option for me.
Many thanks,
David
TF536 compatibility with A2091 SCSI Card
Moderators: terriblefire, Terriblefire Moderator
Re: TF536 compatibility with A2091 SCSI Card
This is the same issue that the CDTV has, and why I added this part to my Amibay FAQ.
The A2091 ROMs are notorious for their DMA issues. I think that if you really need a SCSI controller, you'll have to use a non-DMA one, like the Oktagon.
The A2091 ROMs are notorious for their DMA issues. I think that if you really need a SCSI controller, you'll have to use a non-DMA one, like the Oktagon.
- 8 Bit Dreams
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Re: TF536 compatibility with A2091 SCSI Card
..but then again.. Gayle Emulation will not allow You to boot from that device.. At least i am unable to boot fom my LAN-IDE card that has Oktagon bootROM on it when TF536 is installed..
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Re: TF536 compatibility with A2091 SCSI Card
Thats entirely down to boot priorities of the partitions. no?8 Bit Dreams wrote: ↑Tue Nov 03, 2020 10:46 pm ..but then again.. Gayle Emulation will not allow You to boot from that device.. At least i am unable to boot fom my LAN-IDE card that has Oktagon bootROM on it when TF536 is installed..
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EDIT: The presence or otherwise of Gayle is not the issue. Its always down to the specific boot priority of the drive. This is a software thing.
———
"It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that
indicates how much hurting you shall receive."
"It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that
indicates how much hurting you shall receive."
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Re: TF536 compatibility with A2091 SCSI Card
Hmm.. Not sure, Stephen, may also be an issue with my rev.4.1 A2000..
Just started to build brand new rev.6.2, hopefully will be done @weekend so further tests will be done in near future
Just started to build brand new rev.6.2, hopefully will be done @weekend so further tests will be done in near future
Retro computer hardware & repair in Germany
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Re: TF536 compatibility with A2091 SCSI Card
Look at the boot drives in the ESM and how they are listed. And what the priorities are.8 Bit Dreams wrote: ↑Tue Nov 03, 2020 11:25 pm Hmm.. Not sure, Stephen, may also be an issue with my rev.4.1 A2000..
Just started to build brand new rev.6.2, hopefully will be done @weekend so further tests will be done in near future
———
"It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that
indicates how much hurting you shall receive."
"It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that
indicates how much hurting you shall receive."
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Re: TF536 compatibility with A2091 SCSI Card
I can confirm that my GVP impact II HC +8 card seems to work fine on my a2000 (Rev 6.2) with the TF536 so that would be an option. They come up quite frequently on ebay. I haven't tried a hard drive on it but I have an external CDROM and zip drive working.
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Re: TF536 compatibility with A2091 SCSI Card
Thanks for that @JohnnybarkerJohnnybarker wrote: ↑Wed Nov 04, 2020 9:11 pm I can confirm that my GVP impact II HC +8 card seems to work fine on my a2000 (Rev 6.2) with the TF536 so that would be an option. They come up quite frequently on ebay. I haven't tried a hard drive on it but I have an external CDROM and zip drive working.
———
"It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that
indicates how much hurting you shall receive."
"It is not necessarily a supply voltage at no load, but the amount of current it can provide when touched that
indicates how much hurting you shall receive."
Re: TF536 compatibility with A2091 SCSI Card
@JohnnybarkerJohnnybarker wrote: ↑Wed Nov 04, 2020 9:11 pm I can confirm that my GVP impact II HC +8 card seems to work fine on my a2000 (Rev 6.2) with the TF536 so that would be an option. They come up quite frequently on ebay. I haven't tried a hard drive on it but I have an external CDROM and zip drive working.
Before I go out and buy one, could I ask if you have any memory on the GVP card? And if you do, is it enabled?
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Re: TF536 compatibility with A2091 SCSI Card
Probably he have some memory installed
GVP card does DMA in Zll memory area and is working fine, if no Memory present in Zorroll - i assume it will crash, ive seen that on TF534..
GVP card does DMA in Zll memory area and is working fine, if no Memory present in Zorroll - i assume it will crash, ive seen that on TF534..
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