Search found 267 matches

by Smonson
Sun May 26, 2019 2:32 pm
Forum: MONGREL EDITION DEVELOPMENT & INFO
Topic: True 16MHz Mode
Replies: 111
Views: 9547

Re: True 16MHz Mode

640x200x16 ;) What we need now is a shifter which can make use of the extra bandwidth ;) What needs to be done to get the HDMI mod working at 16MHz? I take it you are feeding the stock shifter with 64MHz to get it to output 32MHz to the MMU, same as Troed? I can give you a firmware file that output...
by Smonson
Sun Apr 28, 2019 11:58 pm
Forum: SOFTWARE
Topic: Hard disk driver situation confusion
Replies: 6
Views: 617

Re: Hard disk driver situation confusion

If you use an emulated ACSI, SCSI or IDE drive in Hatari, you need a hard disk driver (or EmuTOS) like on real hardware. Same with the ACSI image option in Steem SSE. Only if you use the GEMDOS HD emulation (or the corresponding feature in Steem), you don't need a driver. In that case, the emulator...
by Smonson
Sun Apr 28, 2019 2:29 pm
Forum: SOFTWARE
Topic: Hard disk driver situation confusion
Replies: 6
Views: 617

Re: Hard disk driver situation confusion

So how does TOS access the emulated drive? Does it see it as an ACSI device that behaves in a very standards-compliant way and therefore doesn't need an additional driver?
by Smonson
Sun Apr 28, 2019 1:11 pm
Forum: SOFTWARE
Topic: Hard disk driver situation confusion
Replies: 6
Views: 617

Hard disk driver situation confusion

I'm very confused by the ACSI hard disk situation. I can see that there are many drivers available, with various featuresets. Could someone answer a very basic question for me? How come a hard disk driver isn't needed when using an emulated hard drive in Steem or Hatari? Does TOS already have the bu...
by Smonson
Thu Apr 25, 2019 2:24 am
Forum: MONGREL EDITION DEVELOPMENT & INFO
Topic: Flashy Clock - Yet another DEV board
Replies: 128
Views: 8718

Re: Flashy Clock - Yet another DEV board

exxos wrote:
Wed Mar 20, 2019 10:52 pm
Of course if anyone is good at GEM programming it would make life a whole lot easier.
I have no idea what I'm doing, but I volunteer!
by Smonson
Mon Apr 08, 2019 1:44 pm
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 20
Views: 1680

Re: Sidequest: VGA scan doubler

Thanks Exxos, I couldn't have made it this far without all your support and help!

I'll investigate those synchronous counters. That sounds like exactly could be needed (whether discrete or inside the FPGA).
by Smonson
Mon Apr 08, 2019 12:42 pm
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 20
Views: 1680

Re: Sidequest: VGA scan doubler

...I just did a rough add-up of all the main bits and it came to about $15 USD.
by Smonson
Mon Apr 08, 2019 12:34 pm
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 20
Views: 1680

Re: Sidequest: VGA scan doubler

Here's the level of working-ness that was reached. Not too bad for the first try, and valuable information about the feasibility of this project has come out of it.
by Smonson
Mon Apr 08, 2019 12:30 pm
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 20
Views: 1680

Re: Sidequest: VGA scan doubler

If a scanline is all one solid colour, then it looks good apart from reflections that appear outside the border. Thinking on what you said about latching, I added a latch on the RGB lines coming out of the RAM when generating video, and that improved it a bit. So that's defeated my line of thinking ...
by Smonson
Mon Apr 08, 2019 9:12 am
Forum: HARDWARE DISCUSSIONS
Topic: Sidequest: VGA scan doubler
Replies: 20
Views: 1680

Re: Sidequest: VGA scan doubler

Schematics attached.

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