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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: adz on November 25, 2004, 10:03:34 AM

Title: A2091 and M-Tec 68020i???
Post by: adz on November 25, 2004, 10:03:34 AM: Any chance of getting these two to work together??? With the M-Tec 68020i in place any hard drive I attach will not hold its settings. Kinda disappointed really. Any ideas, advice or help would be greatly appreciated. Thanks in advance.
Title: Re: A2091 and M-Tec 68020i???
Post by: Azryl on November 25, 2004, 10:16:24 AM: Nope... wont work :-)

I have an M-Tec 68020i 4meg accelerator in an A2000 atm, and I use a Buddha IDE for the cd-rom and harddrive. Works well with kickstart 3.1 installed, probably will even run OS3.9

The A2091 wont work because the memory read/write is on the 'other side' of the cpu socket, effectively hidden from the dma circuitry.

I beleive the Mtec does not map its memory into the zorro 2 space correctly (I could be wrong)

Az
Title: Re: A2091 and M-Tec 68020i???
Post by: adz on November 25, 2004, 10:32:18 AM: @Azryl

Looks like I'm gonna have one mean A1000 than :lol: I wonder how the M-Tec 68020i would go with an A500 and a GVP HD8+, knowing my luck that will fail too.
Title: Re: A2091 and M-Tec 68020i???
Post by: Azryl on November 25, 2004, 10:49:13 AM: Unconfirmed if the M-Tec 68020i works inside an A1000
never been tempted to try it in mine, it works, dont play around with its insides until I have too! :-)

And I'm fairly sure the same memory access problem would affect the gvp hd8+

I tried the M-Tec 68020i in an A500 with an AlfaPower IDE controller and that combination would not work, even tho it should have regarding the IDE cpu disk drive access :-(

The Buddha(flash) / M-Tec 68020i combo works nicely inside an A2000 under KS3.1
Title: Re: A2091 and M-Tec 68020i???
Post by: adz on November 25, 2004, 11:04:58 AM: @Azryl

A2K is back to stock config now :-( I have a spare A1000 so I might give it a go :-D It will be good for a laugh. Thanks for your help :-)
Title: Re: A2091 and M-Tec 68020i???
Post by: Argus on November 27, 2004, 01:59:18 AM: Quote

adz wrote:
Any chance of getting these two to work together??? With the M-Tec 68020i in place any hard drive I attach will not hold its settings. Kinda disappointed really. Any ideas, advice or help would be greatly appreciated. Thanks in advance.

afaik, the M-Tec 68020i was designed to work with the M-Tec AT500 ide sidecar controller. I had this complete setup once and they did work together fine. I don't know what exactly was done in hardware/software, but the functionality on the AT500 is limited so that it only recognizes one ide device (not good if you want to add an atapi cd-rom). I suspect a similar accelerator limitation so that the 68020i will only work with it's sidecar relative and not others (GVP, IVS, A590, etc.). The only solution I know of is to try and find an AT500. Another long shot would be to try the latest v7 eproms on the A2091.
Title: Re: A2091 and M-Tec 68020i???
Post by: Effy on December 24, 2004, 08:41:29 AM: I had this 68020i too with my A500+ with scsi hd´s and after my first re-format I couldn´t use my harddisc again. It turned out that in HDtoolbox (OS 3.1) I had to take away one digit in the Mask in order to reduce the transfer speed to the computer, or somthing like that. After a save and reboot it suddenly worked again like a charm :-)
Title: Re: A2091 and M-Tec 68020i???
Post by: Shadowfax on March 20, 2005, 07:47:39 AM: I am currently using the M-Tec 68020i/4 Meg simm in my A500 along with the DataFlyer IDE/SCSI sidecar with no problems.