What to do with this?

[Stimpy]

So I got this out of storage, it's been sat for almost 20 years. I have no monitor for it (VGA) no keyboard or mouse. I did hide and power it up, no bangs no smoke. I doubt I will ever get around to completing it, I'd hate to see it go but I'm being realistic.what should I do?

4MB 72 pin (70ns?) Simm wired up for fast RAM access
'F' bus drivers
HBS240 with manual - runs CPU at 2x bus speed with Cache
Bus overclock to 12MHz using Falcon accelerator
TOS 1.04 but also SRAMs for storing TOS 2.06. this was battery backed up and driven by Xilinx CPLD but that's looking pretty messy and the code to upload images is long gone.
RTL8019 network card using EtherNec circuit. Not sure if that was completed.
ET4000 - never got started on this but the card worked fine in a PC.
IDE cable hanging over the motherboard. I think I had this working from the CPLD but for some reason it is not connected.

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[stephen_usher]

My goodness! There is actually an ST in there somewhere.

[JezC]

Wow - some very interesting upgrades in there

Do you have any of the schematics or documentation for any of those add-ons?

It'd be very interesting to see the Gembench scores for something like that compared to a stock ST (and various accelerated machines)...

[Stimpy]

I have the HBS240 manual (in German) and some scraps of notes, which make little sense. All the addons are home made. My benchmarks seem to show that the HBS is slower with TOS2.06 than 1.04. when using TOS1.04 it knows this address range and accesses it quicker. I see I have a note about trying the DTOS2.06 DTACK onto the processor...

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I think Id be interested in that bus speeder that doesn't affect the ST video timing (Troed?). Remove the IDE and just use a Gotek. Not sure about the network and ET4000, mainly just because the long length of wires will probably cause problems cranking the bus speed up. Maybe change the bus pullup resistors. Change the 70ns SRAMs for fast EEPROMs.

...or just sell it on

[Badwolf]

A thing of beauty!

BW

[Stimpy]

It looks like I was feeding the Shifter 48MHz then supplying the WD1772, YM2149 and ACIAs with original clocks.

I've had a brief look at the DoubleSt thread and I now see it's possible to leave the Glue at the original 8MHz to keep the original video timing - which could be useful, this was always the downside to speeding up the bus.

Can the DMA be kept at 16MHz if you want possible faster hard disk?

[Stimpy]

Well...it's been one year and still not touched it. I don't even have a monitor to connect it to. So it is probably for the best I pass this on and hopefully someone else can take it on as a project and revive it. Please make offers, bearing in mind it has an ET4000, RTL8019 card and HBS240.

[Steve]

Where are you located?

[Cyprian]

that's one sounds interesting.

Bus overclock to 12MHz using Falcon accelerator

What kind of Falcon accelerator did you use?

[Stimpy]

that's one sounds interesting.

Bus overclock to 12MHz using Falcon accelerator

What kind of Falcon accelerator did you use?

Phantom, as it is basically a divider. Probably best to replace with the DoubleST stuff.