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What version exactly is this? Could it be the very first one from 2018 that didn't get the CPLD update yet?
Take a picture of the card and upload if you're not sure. The Warranty ID may also help, but not really fast - the database server is already shut down until next year. I can help faster if you post a picture and let me know the date when it was originally purchased.
Jens
This is not about a certain revision - it's about ageing 74xx157 chips that don't comply with their own specs any more. The output voltages are way too low if the chip in question displays the defect I mentioned.
Jens
You can measure if the 5V rail is up - just use any of the mounting holes as GND and any of the 5V supply pins of any of the chips.
Jens
There's multiple cases like this already in this forum: The joystick multiplexer chip is defective and doesn't output a high-enough voltage to reach the minimum required for an LVCMOS input. The chip is located very close to the mouse/joystick ports and is normally a 74LS157. You can replace it with a 74HC157 or 74HCT157 if you don't find the LS version.
Jens
Sounds like the CF card adapter is not getting power - an unpowered CF card may drag down the whole bus and even make the install DOM "invisible".
Jens
"sometime in the last year" means that is either broke with V3.3.3 or with V3.4.0, and it *must* have worked with V3.3.2. Can you test the previous version(s)?
Jens
No need for a Wiki entry, just run the install script. Should be obvious if you unpack the archive on your Amiga (note that you should NOT unpack the archive on a PC, as the file attributes will be lost, and the install script wouldn't have the "s" flag set).
Jens
Are you sure that this is an original MK1? If the Power LED blinks on MK1, there's some serious space-time-bending going on (it's hardwired to the Vcc rail through a resistor).
Jens
Gimp (Linux) and Irfanview (Windows) are the quickest methods to shrink pictures. There might be even quicker ways with apps on smart phones.
Jens
On V2, these are standard BC850C types.
Jens
The ACA600 is still on my list - just didn't get around to assembling the new prototype yet. The goal is to have either a low-cost memory expansion and Kickstart replacement for the 68000-based machine, and also give you all the choices that A1200 users have in terms of accelerators: I'm planning to make the whole range of ACA12xx accelerators fit inside the A600 case.
Jens
Sorry, this is the only discount planned for the forseeable future. However, I'll try to work with more resellers in 2024, will try to encourage anyone to take stock and be able to ship from a local warehouse.
Jens
Do we have the very same problem for ACA500plus & ACA1221lc?
Not that I would know of, no.
Jens
Unfortunately, this is a known, currently unsolved problem.
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Kannst du auch ein timedemo demo1 machen?
Timedemo demo1 in NTSC 320x200 macht bei 95MHz 15,98 FPS (60,6 Sekunden). Fürs Umstellen auf 100MHz brauche ich mehr Zeit - ein Tool gibt es dafür noch nicht und ich habe heute noch einiges Andere auf dem Plan.
Bei dem Ergebnis mit dem A4000 würde ich gern nochmal vergleichen, was die anderen Einstellungen sind. Das sieht für mich so aus, als wäre das nicht AGA, sondern RTG-Grafik - vielleicht aber auch ein kleinerer Bildausschnitt. Ich ziehe immer auf volle Größe um beste Vergleichbarkeit zu haben. Ich hab' mal Dein Video angesehen: Bei 0:23 sieht man, dass Du die Screengröße auf ca. drei Viertel reduziert hast. Wenn ich das mache, bekomme ich bei 95MHz 19,27FPS. Ich habe aber nicht alles im Multitasking abgestellt - bei mir läuft immer noch ein TCP/IP Stack, und das Laufwerk klickt fröhlich vor sich hin, ergo ist Multitasking aktiv. Wenn ich die rund 5% Taktfrequenz addiere, liege ich damit gleich auf mit der BFG.
Die BFG und die TF1260 machen also spürbar mehr Performance in Sachen Speicher im Vergleich zur Warp1260. Vielleicht sollte ich mir die Werte mal genauer ansehen, damit ich nicht den langsamsten "Gegner" jage 
Trotzdem müsste man für eine wirkliche Vergleichbarkeit immer die Screengröße maximieren, sonst vergleicht man Äpfel mit Birnen.
Wir können zwar noch Speicherzugriff optimieren, aber das wird erst passieren, wenn die Software-API für sämtliche Features steht und wir mit dem Debugging der Peripherie außenrum beginnen können. Es nützt nichts, wenn wir jetzt das letzte Bisschen Performance angehen, aber dafür Zeit bei den Dingen verlieren, die am Ende die Karte wirklich im Alltag benutzbar machen. Optimierungen können wir immer als Flash-Update veröffentlichen, denn die Hardware ist genau wie unsere Flickerfixer gebaut: Der FPGA kann im Feld ein Update bekommen, und wir können damit andere row-open Strategien, Verteilung von Rows/columns und andere Adresskomparatoren testen. Ideen habe ich reichlich, aber das wird vom Team aktiv gebremst, immer mit dem Mantra "first make it work, then make it fast".
Jens
Thanks - let your social network know!
Jens
Interesting - thanks for sharing. I'll have to check the schematics to understand how the clock chip can stop the computer from booting.
Jens
We do prioritize shipments, and even with the internet outage that happened this week, we've done everything possible to really ship daily.
Jens
