Nice work on this discovery btw =DLIV2 wrote: ↑Tue Mar 09, 2021 5:46 pm Yep, you're meant to do some bus arbitration before asserting boss (/BR, wait for /BG then assert /BOSS) before Buster will give the copro control but if you haven't got a CPU in the motherboard socket you can just ground /BOSS on the riser and you're good to go.
I am working on adding proper arbitration to SukkoPeras riser (so you can leave the other cpu in) as I need to test that the copro arbitration of my Buster replacement but I'm not sure when I'll have that done
As a step to that I've already updated his adapter to add solder jumpers to ground /BOSS and cut off the E clock which has been upstreamed to his repo
TF536 on A2000
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Re: TF536 on A2000
My YouTube Channel - www.youtube.com/GadgetUK164
Re: TF536 on A2000
My findings after seeing this post: I grounded BOSS via a jumper on my Matze slot adaptor and the A2000 does indeed now boot with a SCSI hard drive on the A2091, auto boot enabled, RAM disabled. The drive is detected by HDToolbox but the partition is never mounted and I am prompted to “save changes” every time. I haven’t carried out any of the component swaps as mentioned by gadgetuk164.LIV2 wrote: ↑Tue Mar 09, 2021 5:12 pm I see several mentions that the 536 locks up when using with the A2091 and thought I'd post my findings in regard to that
While working on the Buster CPLD replacement I found that Buster doesn't signal bus requests to the coprocessor slot unless /BOSS is asserted which causes the A2091 to lock up as it never gets a bus grant (because the CPU never sees the request).
I found that grounding the /BOSS signal on my coprocessor slot adapter and that allowed the system to boot so if your system needs to support DMA of some kind (Like if you use the A2091 with vb2091 to support DMA in a Z3 system) you will want to do this unless the TF is plugged into the CPU socket rather than the slot.
Re: TF536 on A2000
My card is running version 7 firmware so today I tried earlier versions and with v6 I saw the same thing as you with HDToolbox etc. but it works with v7.
So I'd say at minimum you need v7 firmware and the rev 6 fixes are probably needed for anyone running a TF536 in the 2000 I think.
So I'd say at minimum you need v7 firmware and the rev 6 fixes are probably needed for anyone running a TF536 in the 2000 I think.
Re: TF536 on A2000
Just curious, I'm going to be building a 2000 box in the future that will ultimately end up with a Buffee CPU, zz9000 video card, and a buddha IDE controller. In the mean time I was thinking about a TF536 until the buffee comes in. But can the IDE on the TF536 be disabled? Mainly thinking of it as a temporary accelerator that I might use in a future machine (A500 maybe?) at a later date if it can play with a Buddha.
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Re: TF536 on A2000
The IDE cannot be disabled but why do you need to? Its not like there is an onboard A2000 IDE its overriding.patracy wrote: ↑Mon Mar 29, 2021 7:11 pm Just curious, I'm going to be building a 2000 box in the future that will ultimately end up with a Buffee CPU, zz9000 video card, and a buddha IDE controller. In the mean time I was thinking about a TF536 until the buffee comes in. But can the IDE on the TF536 be disabled? Mainly thinking of it as a temporary accelerator that I might use in a future machine (A500 maybe?) at a later date if it can play with a Buddha.
———
"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 on A2000
I had planned on using the buddha IDE controller for the HD controller. I guess I could not use the buddha at all until I get the buffee.
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Re: TF536 on A2000
If you have a Buddha then you can just use it for IDE.
———
"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 on A2000
I can confirm that the Buddha IDE controller works with the TF536 installed. There was no need to disable IDE on the TF536 or make any changes to anything in the system. Insert Buddha, and connect IDE drive. I made a post on it here:
https://www.exxosforum.co.uk/forum/viewt ... =76&t=4026
Re: TF536 on A2000
Thank you for the feedback on that!