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by Smonson
Thu Dec 09, 2021 1:01 am
Forum: HARDWARE DISCUSSIONS
Topic: 32768 color dual Shifter ST mod - schematics lost?
Replies: 127
Views: 36764

Re: 32768 color dual Shifter ST mod - schematics lost?

If anyone wants to see more colours on the HDMI mod, we can easily bump it up to 8bpp (which is the native HDMI colour depth).
by Smonson
Thu Dec 09, 2021 12:58 am
Forum: HARDWARE DISCUSSIONS
Topic: 32768 color dual Shifter ST mod - schematics lost?
Replies: 127
Views: 36764

Re: 32768 color dual Shifter ST mod - schematics lost?

Forgive me, as I'm not a HW guy, but wouldn't what you just explained then create a physical 18-bit palette? Yes. If it wasn't for the fact that the palette writes are only 16 bits wide they could have made the mod support 18-bit colour. Actually they could have gone up to 5-6-5 format with no extr...
by Smonson
Wed Dec 08, 2021 6:58 am
Forum: HARDWARE DISCUSSIONS
Topic: 32768 color dual Shifter ST mod - schematics lost?
Replies: 127
Views: 36764

Re: 32768 color dual Shifter ST mod - schematics lost?

Darklord wrote: Wed Dec 08, 2021 4:39 am This is the same concept as the John Russell Industries 4096 color
upgrade, right? JRI 4096C board.
I assume so. I've never seen any info about how it works.
by Smonson
Wed Dec 08, 2021 4:56 am
Forum: FPGA DEVELOPMENT
Topic: Project: HDMI/DVI out for STFM
Replies: 666
Views: 320354

Re: Project: HDMI/DVI out for STFM

Wait, what? I don't understand? So any accelerated Atari fails with the HDMI mod? So it's useless with anyone with an AdSpeed, Turboxx board, Pak 68/3, etc installed? ...sorry, my bad, Let me rephrase that: nobody's ever got the HDMI mod to work at double speed on a 16-MHz machine. If the mod ran a...
by Smonson
Wed Dec 08, 2021 4:23 am
Forum: HARDWARE DISCUSSIONS
Topic: 32768 color dual Shifter ST mod - schematics lost?
Replies: 127
Views: 36764

Re: 32768 color dual Shifter ST mod - schematics lost?

I have an incomplete understanding also, but my interpretation of how it would have worked is that during writes to the palette registers, the second shifter would receive the data bus lines transposed like this: D14 -> D8 (red bit 5 -> shifter 2's red bit 1) D13 -> D4 (green bit 5 -> shifter 2's gr...
by Smonson
Wed Dec 08, 2021 3:53 am
Forum: FPGA DEVELOPMENT
Topic: Project: HDMI/DVI out for STFM
Replies: 666
Views: 320354

Re: Project: HDMI/DVI out for STFM

Once we get the board working 100% we can possibly look at additions such as the STE palette ... The STE palette has always been supported actually. Also, it's a bit of a technicality but there's a 256-colour mode as well, but the pixel clock is halved. So it's practically useless since nobody's ev...
by Smonson
Wed Dec 01, 2021 2:31 am
Forum: SOFTWARE
Topic: TOS 1.4 disassembly project
Replies: 20
Views: 7132

Re: TOS 1.4 disassembly project

from addr_34fc on, there are lots of ".short" statements, but that is just normal code, no data. Lots of your routines from the BIOS don't even have proper names yet. That's just how far I've gone so far, as I mentioned only 13% of the ROM is disassembled. Re: the desktop, it's less inter...
by Smonson
Sat Nov 27, 2021 1:28 pm
Forum: SOFTWARE
Topic: TOS 1.4 disassembly project
Replies: 20
Views: 7132

Re: TOS 1.4 disassembly project

I think you are aware of the source i reconstructed for TOS 2.x? After i finished it, i also started on doing the same for TOS 1.04, and you can already find some work on it in that archive. However, it is far from being finished. I wasn't aware of it, I haven't really been in the loop on that sort...
by Smonson
Fri Nov 26, 2021 11:55 am
Forum: SOFTWARE
Topic: TOS 1.4 disassembly project
Replies: 20
Views: 7132

TOS 1.4 disassembly project

Heyo, I just thought I'd post a topic about my TOS 1.4 disassembly repo. I've only got a tiny bit of it disassembled so far (13%), and it's completely useless to everyone. But it exists, so there might as well be a record of it. As a matter of fact even if it was complete, it'd still probably be use...
by Smonson
Sat Nov 13, 2021 10:01 am
Forum: MAGAZINES
Topic: ST Action
Replies: 12
Views: 12336

Re: ST Action

Awesome, I loved ST Action! I have very little of my original ST stuff from back in the day, but I have managed to hold on to two ST Action issues. In Australia there were very few BBSes that catered to the ST, so British coverdisk mags were my only real source of games/programs and info. staction.p...

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