Steve's DFB1 build

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Steve
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Re: Steve's DFB1 build

Post by Steve »

Thank you @Badwolf for answering all my n00b questions! :D I am all set now :D
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Badwolf
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Re: Steve's DFB1 build

Post by Badwolf »

Actually, it's just occurred to me I don't actually know the situation when using a Raspberry Pi.

Gadget164's done a good video on programming with a Raspberry Pi, I'd suggest he'd know better than me.

Just in case, I'd recommend powering the DFB1 board with 5V before connecting the Raspi. ie. Make sure both are powered before joining them.

And, if I were being super paranoid, I'd have a separate GND line between them before making the connection.

Your mileage may vary, this is not a trick I have used personally.

BW
DFB1 Open source 50MHz 030 and TT-RAM accelerator for the Falcon
DSTB1 Open source 16Mhz 68k and AltRAM accelerator for the ST
Smalliermouse ST-optimised USB mouse adapter based on SmallyMouse2
FrontBench The Frontier: Elite 2 intro as a benchmark
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Badwolf
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Re: Steve's DFB1 build

Post by Badwolf »

By the way, let me know if you have any issues with the 'release' firmware (220329) failing after extended heavy use (>30mins with the case closed). If you do, there's an experimental firmware (220407) which I don't yet consider 'release' level, but for me has been stable over time.

The pre-release version is available in the source:- https://github.com/dh219/DFB/tree/main/DFB1/JEDEC

BW
DFB1 Open source 50MHz 030 and TT-RAM accelerator for the Falcon
DSTB1 Open source 16Mhz 68k and AltRAM accelerator for the ST
Smalliermouse ST-optimised USB mouse adapter based on SmallyMouse2
FrontBench The Frontier: Elite 2 intro as a benchmark
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stephen_usher
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Re: Steve's DFB1 build

Post by stephen_usher »

When programming a CPLD using a Raspberry Pi DON'T connect the 3.3V line as it can fry the chip if the RPi powers up before the power to the chip.
Intro retro computers since before they were retro...
ZX81->Spectrum->Memotech MTX->Sinclair QL->520STM->BBC Micro->TT030->PCs & Sun Workstations.
Added code to the MiNT kernel (still there the last time I checked) + put together MiNTOS.
Collection now with added Macs, Amigas, Suns and Acorns.
Steve
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Re: Steve's DFB1 build

Post by Steve »

stephen_usher wrote: Fri Apr 15, 2022 1:31 pm When programming a CPLD using a Raspberry Pi DON'T connect the 3.3V line as it can fry the chip if the RPi powers up before the power to the chip.
This makes good sense! Yes of course, as 3v3 is provided by the voltage converter on the DFB1 anyways. I'll do this thx.
Steve
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Joined: Fri Sep 15, 2017 11:49 am

Re: Steve's DFB1 build

Post by Steve »

All seems good @Badwolf next will be to try in a my Falcon - but I might be a bad student and put TT ram on first. Will see how I feel. :D

xc3sprog recognises the CPLD!

dfb12.png
dfb12.png (72.27 KiB) Viewed 1782 times

All lights are on!

PXL_20220415_191510469.jpg
PXL_20220415_191510469.jpg (310.3 KiB) Viewed 1782 times

xc3sprog programs the CPLD!

dfb11.png
dfb11.png (82.75 KiB) Viewed 1782 times

Lights go blue!

PXL_20220415_192141509.jpg
PXL_20220415_192141509.jpg (306.43 KiB) Viewed 1782 times
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Badwolf
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Re: Steve's DFB1 build

Post by Badwolf »

Boot her up!

BW
DFB1 Open source 50MHz 030 and TT-RAM accelerator for the Falcon
DSTB1 Open source 16Mhz 68k and AltRAM accelerator for the ST
Smalliermouse ST-optimised USB mouse adapter based on SmallyMouse2
FrontBench The Frontier: Elite 2 intro as a benchmark
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Badwolf
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Re: Steve's DFB1 build

Post by Badwolf »

@Steve

Ominous silence, Steve. I for one am waiting with bated breath!

BW
DFB1 Open source 50MHz 030 and TT-RAM accelerator for the Falcon
DSTB1 Open source 16Mhz 68k and AltRAM accelerator for the ST
Smalliermouse ST-optimised USB mouse adapter based on SmallyMouse2
FrontBench The Frontier: Elite 2 intro as a benchmark
Steve
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Joined: Fri Sep 15, 2017 11:49 am

Re: Steve's DFB1 build

Post by Steve »

I got the RAM on order so I was waiting for that :)
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HigashiJun
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Re: Steve's DFB1 build

Post by HigashiJun »

Looks really good !
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