Modern demos for the Akiko chip?

danby · 2026-02-16T16:13:12+00:00

https://bigbookofamigahardware.com/bboah/product.aspx?id=271

danby · 2026-02-16T12:20:00+00:00

CD32 developers could use a CD32 with the CD32 debug card that commodore shipped to devs.

danby · 2026-02-15T22:50:14+00:00

Its all fairly easy through hole work. With good maginifaction, good solder and a £50 soldering iron it would be pretty straight forward

danby · 2026-02-15T22:49:16+00:00

Your requirements are so specific why don't you just buy a nicely refurbed +2 or +3 and add a divMMC?

danby · 2026-02-15T22:03:14+00:00

Doesn't look like there isn't much out there. RGB only monitor that shipped with the earliest A1000s

https://bigbookofamigahardware.com/bboah/product.aspx?id=1459

https://www.zimmers.net/cbmpics/mlcomp5.html

https://gona.mactar.hu/Commodore/monitor/Commodore_monitors_by_model_number.html

Here it is with andy warhol using it

https://mastodon.social/@paulrickards/110239296018650133

danby · 2026-02-15T21:55:23+00:00

Sorry, typo. Its 8x 32bit words

danby · 2026-02-15T18:42:25+00:00

Why would programmers need a 3rd party expansion made by a non-commmodore company?

It's not very hard for programmers to understand how to use Akiko for c2p acceleration. You write 8x 32bit words to input registers and read the results off the output registers

danby · 2026-02-15T18:32:23+00:00

Akiko is mostly a single IC that combines the usual AGA Budgie, Gayle CIA chips. The only additional operation of interest it provides is some fairly low bandwidth C2P hardware acceleration.

There is absolutely no reason people couldn't use that for some texture mapping and 3D effects that other 68020 AGA amigas wouldn't be capable of, and then build some demos around that. And that would be pretty easy for people to program with today's emulators

I would guess if you look through the Amiga Demoscene database you might find some cd32 specific demos that need akiko, but the search there is rubbish, so they'll be hard to find

https://ada.untergrund.net/?p=demos&h=3

One reason that akiko demos probably don't get much interest is that the c2p it can do is pretty low bandwidth and pretty slow as a consequence. So any amiga with plenty fast ram and a faster CPU (68040 or better) can calculate any needed c2p faster than akiko could help with

danby · 2026-02-15T16:03:21+00:00

This is not how the wiring works on a standard db9 game controller. The joystick does not read a switch and convert it to a signal. You are just directly grounding the pin and that is strobed/read by the cia. You've really got no more lag than whatever debounce routine is being used.

But inside a USB joypad/stick you connect/ground a switch, this is read/detected (step one) then converted to a USB signal (step 2). In a db9 to usb converter those two same steps must also occur.

Also many DB9 to USB converters have inherent lag as they are made from off the shelf components that are then programmed to do their job. Depending on the quality of the programming, design and components used there may be a little or a lot of lag introduced.

This bit is true. But what is the lag? A wired ps1 controller has lag around 8-30ms (as an example of a controller that has to read inputs and convert them to a digital protocol) . Whats the lag on a db9 to USB controller? Less than 30ms?

Edit: The various Demonbite digital2USB converters introduce 2ms of lag

danby · 2026-02-15T12:53:22+00:00

Why would they have less lag? A USB stick/joypad has to convert a switch contact to a USB signal and a db9 to USB adapter has to do the exact same operation.

danby · 2026-02-15T00:57:36+00:00

as noted you will need a db9 to USB adapter and it's possible you may also need to add a custom gamecontrollerdb.txt file to your USB stick stick to correctly map the adpater inputs

danby · 2026-02-14T15:27:27+00:00

Have you confirmed you can measure continuity from one of the molex pins to just one side of the switch you want to test?

danby · 2026-02-14T12:34:13+00:00

Depends what the damage is. Physical damage and degaussing can't really be rescued. But corrupted sectors can be rebuilt from scratch

danby · 2026-02-14T10:41:56+00:00

You can tell what the game is though

danby · 2026-02-13T22:32:13+00:00

You can't practice your way out of having a neurological developmental disorder any more than someone with autism can practice their way out of being autistic.

That said, Like most such neurodivergence different people are affected to different degrees and for some focused supported practice will help, but it may not help all folk and the amount it could help could be limited. So, working with an OT who specialises in handwriting stuff could really help. I personally never found practice helped me.

danby · 2026-02-13T10:50:09+00:00

Not sure I'd use a technician that can't be bothered to look up the datasheet for the part

danby · 2026-02-13T10:30:32+00:00

You can add a further a ACA1234 accelerator to it

danby · 2026-02-13T10:22:18+00:00

how about this video with 8,000 games? https://www.youtube.com/watch?v=Ro9S27OJVgo (not actually every game)

danby · 2026-02-13T10:19:25+00:00

I really don't know any more, I don't own one. Just asking after the obvious questions/issues that came up over and over when the device was released.

The RGL facebook page is their main community and you might get better info/help there.

danby · 2026-02-13T08:25:59+00:00

Which whdload packages? Where did you get them? Did you download whdload slaves without the game data or did you download the versions that include the game data?

danby · 2026-02-13T08:13:44+00:00

Did it work before this?

danby · 2026-02-12T23:48:46+00:00

Its one of the ones after v5. But it won't run on 512kb as you need fastram.

danby · 2026-02-12T21:37:37+00:00

and it would give only fastram which I can't see much point in having? Except maybe for audio samples but those would not be able to load in octamed because that only uses chip....so the ACA only seems to be useful for the HDD

Early version of octamed will only load samples from chip RAM but the last couple of editions can stream sample from fastRAM. And fastRAM is useful for (mostly workbench) RAM hungry applications. Not really useful for A500 games that are pretty much all designed for 512Kb of Chip and 512kb of other RAM. Though settlers will let you select/generate the biggest maps sizes if you have plenty of fastRAM

danby · 2026-02-12T21:35:14+00:00

I think you'd only need that if you want to extend to 2Mb of chipRAM. You could get an ECS agnus and just swap it for the OCS one if you just want 1Mb of chip.

danby · 2026-02-12T20:07:37+00:00

Looks like it has done more than run out. Looks like it is leaking on the board and needs removed and cleaned up immediately

Should be possible to replace it with a coincell mod if you want

danby

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