Search found 259 matches

by ctirad
Wed Sep 19, 2018 8:55 pm
Forum: Professionals
Topic: Falcon Nova Adapter ...
Replies: 26
Views: 1566

Re: Falcon Nova Adapter ...

Rustynutt wrote:Think the Magnum card uses a different address.


NOVA Falcon + Magnum works, so you can have 8MB RAM total (or perhaps even 10MB?). Same thing for the Blow-UP FX alt RAM.
NOVA allways eats 4MB of the address space normally used by ST-RAM, regardless the physical VRAM size available on the card.
by ctirad
Wed Sep 19, 2018 8:42 pm
Forum: Professionals
Topic: Falcon's 16bit bus myth - 32bit vs 16bit war
Replies: 61
Views: 10175

Re: Falcon's 16bit bus myth - 32bit vs 16bit war

No, that is impossible. While the the both cards would be interconnected by the same 16bit expansion bus, there is no way how they could run on any higher speed.
by ctirad
Tue Sep 18, 2018 4:15 pm
Forum: Hardware
Topic: Phantom accelerator (by Phanatic).
Replies: 9
Views: 757

Re: Phantom accelerator (by Phanatic).

This looks like a proper schematics of my updated clock-patch.
by ctirad
Mon Sep 17, 2018 8:27 am
Forum: Hardware
Topic: LCD capable of 100 Hz?
Replies: 12
Views: 613

Re: LCD capable of 100 Hz?

You wouldn't be the first to suggest that. :) I know, we have been arguing about it several times ;) I even have something like ~8 years old code which does that universally for "every' demo. Was it even released? I'm definitely interested in such code. - many (mostly RGB) demos hook on VBL, i...
by ctirad
Mon Sep 17, 2018 7:53 am
Forum: Hardware
Topic: Phantom accelerator (by Phanatic).
Replies: 9
Views: 757

Re: Phantom accelerator (by Phanatic).

As micro said. The device is extremely simple. One 50Mhz crystal oscillator, 74F00 for 50/32Mhz switching and one 74F04 as a clock output buffre and 32Mhz to 500Hz clock divider on the main device and 74F04 + SN7404N on the clock patch. However, the installation required some skills. Unfortunately, ...
by ctirad
Sun Sep 16, 2018 9:52 pm
Forum: Hardware
Topic: LCD capable of 100 Hz?
Replies: 12
Views: 613

Re: LCD capable of 100 Hz?

What about to patch the VGA100Hz (and PAL) demos to output regular VGA timings? As a side effect it will make them BUS accelerator compatible.
by ctirad
Sun Sep 16, 2018 9:46 pm
Forum: Hardware
Topic: Phantom accelerator (by Phanatic).
Replies: 9
Views: 757

Re: Phantom accelerator (by Phanatic).

It's a Falcon accelerator designed by me about 20 years ago. I initially "borrowed" the clock-patch and on-off switch via ACIA pin from the Nemesis accelerator. Much later I also designed a new clock patch based on two chips instead of the one that is more suitable for use with the the CT6...
by ctirad
Wed Aug 29, 2018 9:17 pm
Forum: Professionals
Topic: FPGA graphic card
Replies: 41
Views: 13092

Re: FPGA graphic card

Just a FYI. Recently I restarted my work at the FPGA video card. Of course, the initial development will be made on the FPGA development board mentioned earlier in this thread. I have already working simulatenous digital DVI and analog VGA (via external resistor DAC) video generating from my previou...
by ctirad
Thu Aug 09, 2018 9:32 am
Forum: Applications
Topic: Amikit style blob/OS for Atari?
Replies: 45
Views: 2042

Re: Amikit style blob/OS for Atari?

You can get the drive contents from https://aranym.github.io/afros.html and replace and modify to your needs.
by ctirad
Thu Aug 02, 2018 1:11 pm
Forum: Hardware
Topic: Falcon CPU
Replies: 12
Views: 1208

Re: Falcon CPU

:cheers:
by ctirad
Wed Aug 01, 2018 11:35 am
Forum: Hardware
Topic: Vertical white stripes when using a ST to VGA cable
Replies: 12
Views: 1090

Re: Vertical white stripes when using a ST to VGA cable

marcello wrote:Thanks, I read a bit about what are ground loop, will see if I can avoid that, then look into a replacement PSU.


You need only to replace the electrolytic capcaitors, not the whole PSU.
by ctirad
Mon Jul 30, 2018 12:18 pm
Forum: Hardware
Topic: Vertical white stripes when using a ST to VGA cable
Replies: 12
Views: 1090

Re: Vertical white stripes when using a ST to VGA cable

This kind of noise is usualy caused by a signal disturbance from the mains caused by either a ground loop, or weak capacitors in ST PSU, or both. I'd also check the cable for a proper impedance on RGB lines and termination.
by ctirad
Fri Jul 27, 2018 8:38 am
Forum: Professionals
Topic: What does 'Blitter off' really mean?
Replies: 6
Views: 692

Re: What does 'Blitter off' really mean?

From what i know the Blitter in F030 actually cannot be completeley switched off and the bit is just ignored.
by ctirad
Wed Jul 25, 2018 6:20 pm
Forum: News & Announcements
Topic: ZXR 0.1c (updated)
Replies: 22
Views: 2073

Re: ZXR 0.1a (new Speccy emu)

Do you think about implementing a GEM output mode some day?

EDIT: BTW, do you use YM for sound, or you have an AY software emulation?
by ctirad
Sun Jul 22, 2018 3:20 pm
Forum: News & Announcements
Topic: ZXR 0.1c (updated)
Replies: 22
Views: 2073

Re: ZXR 0.1a (new Speccy emu)

Is this emulator a new one or some port?
by ctirad
Sun Jul 22, 2018 11:59 am
Forum: Hardware
Topic: Falcon CPU
Replies: 12
Views: 1208

Re: Falcon CPU

I wonder is there any real difference between Motorola made CPUs badged SC414230FE16 for Falcon and generic countepart MC68030FExx, provided that they are in same TQFP packaging? I mean can Falcon board be fitted with such generic CPU? Afaik, It was never proven by a real experiment, but the chips ...
by ctirad
Wed Jul 11, 2018 7:06 pm
Forum: Professionals
Topic: TT Hi res in colour?
Replies: 17
Views: 2212

Re: TT Hi res in colour?

Yes, I know and it is in my TODO list for a years. I already did a Spartan6 FPGA based 8bit Atari GTIA chip with upscaled HDMI+VGA output https://github.com/ctirad/FPGtiA . It is incomplete (no dedicated HW, just a FPGA devboard wired to the motherboard trhu 3.3V level shifters; also no PMG support)...
by ctirad
Tue Jul 10, 2018 7:25 am
Forum: Professionals
Topic: TT Hi res in colour?
Replies: 17
Views: 2212

Re: TT Hi res in colour?

I'm talking about some general solution. The TT one would need an additional ECL level shifter, more RAM for a framebuffer and much precise timing.
by ctirad
Mon Jul 09, 2018 10:09 pm
Forum: Professionals
Topic: TT Hi res in colour?
Replies: 17
Views: 2212

Re: TT Hi res in colour?

I don't have an TT, unfortunatelly, but I'm definitely going to make expriments on the ST. For the pure external device, the hardest part would be to sychronise the device with the (TT)SHIFTERs pixel clock and to know exact position of the first visible pixel on the line. However, the ODIN existence...
by ctirad
Mon Jul 09, 2018 2:39 pm
Forum: Professionals
Topic: TT Hi res in colour?
Replies: 17
Views: 2212

Re: TT Hi res in colour?

As there is no way to increase the bandwidth, that would mean you had to send 8 TT High mono frames to get one 1280x960 256 colour frame. You'd end up with something like 7 Hz frame rate. Sure you'd want that? For the desktop usage? Definitely! Actually it will be more like 8-9fps, because of the 7...
by ctirad
Sun Jun 17, 2018 1:57 pm
Forum: C / PASCAL etc.
Topic: VGA ISA on ST
Replies: 18
Views: 3373

Re: VGA ISA on ST

Cziets, you are awesome. I have to check it on my Mulltiboard and Panther2.
Is there a way to enable some debug info? I'm going to start emutos from the floppy (image).
by ctirad
Tue May 22, 2018 8:36 am
Forum: Hardware
Topic: H&N Multiboard and STE
Replies: 72
Views: 11718

Re: H&N Multiboard and STE

I have to repated that this particualr card *worked* in another Atari (PAK68/3+Pnather2), unfortunatelly I don't have that setup anymore. Also, I didn't found a W32 option in the VMG4000 software provided by the latest NVDI version. Where can I find the W32 capable version? EDIT: I found the Pan...
by ctirad
Mon May 21, 2018 4:41 pm
Forum: Hardware
Topic: H&N Multiboard and STE
Replies: 72
Views: 11718

Re: H&N Multiboard and STE

Thank you for the info, but even with the vofa driver there is no success at all.

My card:
ET4k.jpg
by ctirad
Sun May 20, 2018 9:36 am
Forum: Hardware
Topic: H&N Multiboard and STE
Replies: 72
Views: 11718

Re: H&N Multiboard and STE

I'm reopening the thread, because I've got the same problem with a non working E4000 card with the Multiboard (MegaST). The VGA card is proven to work in another MegaST using Panther/2 adapter. I tried the adresses from the picture below and the provided .inf file without success. It is really a cor...
by ctirad
Thu May 17, 2018 7:57 am
Forum: Professionals
Topic: Netsurf version for 256 colours?
Replies: 2
Views: 1139

Re: Netsurf version for 256 colours?

I know it is not the right answer to you question, so take i only as a note. With Phantom enabled you can reach 640x480 in TC on VGA at minimum. When your LCD is capable of lower refresh rates that 60Hz, you should reach up to 800x600 non interlaced TC with the refaresh rate around 50Hz. With CT60 y...

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