Search found 245 matches

by ctirad
Sun Jul 22, 2018 3:20 pm
Forum: News & Announcements
Topic: ZXR 0.1a (new Speccy emu)
Replies: 3
Views: 150

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: 8
Views: 216

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: 1637

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: 1637

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: 1637

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: 1637

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: 1958

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: 10516

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: 10516

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: 10516

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: 650

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...
by ctirad
Sat May 05, 2018 10:01 pm
Forum: Hatari
Topic: Raspberry Pi baremetal port?
Replies: 49
Views: 5113

Re: Raspberry Pi baremetal port?

I'm still working on the even more lighweight backend. The current one based on the MESA+EGL+SDL2 is still too bloated (about 100MB of compressed initramfs, while more than a half of that space is occupied by mesa and its deps ). However, the SDL2 recently got the ability to use the linux kernel KM...
by ctirad
Sat May 05, 2018 9:42 pm
Forum: Hatari
Topic: Raspberry Pi baremetal port?
Replies: 49
Views: 5113

Re: Raspberry Pi baremetal port?

Higher latency is just the price one has to pay when use the real preemptive OS and high level API. The situation is completely different for ATARI/TOS MIDI and audio applications that have direct access to the hardware registers. Totaly uncomparable.
by ctirad
Sat May 05, 2018 7:56 am
Forum: Hatari
Topic: Raspberry Pi baremetal port?
Replies: 49
Views: 5113

Re: Raspberry Pi baremetal port?

It is actually much slower, than just "a bit". But it's not a real problem, the khadas can run the 32bit system as well.
by ctirad
Fri May 04, 2018 4:06 pm
Forum: Hatari
Topic: Raspberry Pi baremetal port?
Replies: 49
Views: 5113

Re: Raspberry Pi baremetal port?

Faucon2001: actually I remember that ctirad had done something very close to what you describe (super minimal linux distro without X but still accelerated via mesa+sdl2 just for aranym) but he, as usual, hasn't published anything (shame! :-)) I'm still working on the even more lighweight backend. T...
by ctirad
Fri May 04, 2018 3:46 pm
Forum: Hatari
Topic: Raspberry Pi baremetal port?
Replies: 49
Views: 5113

Re: Raspberry Pi baremetal port?

I disagree. I am not sure of the specifics of thread pre-emption but it is unsuitable for real-time applications such as music production in my opinion. There is nothing wrong with music production on Linux. WIth jack, rt core and decent hardware you can reach latencies between 1-2ms with a rock st...
by ctirad
Thu May 03, 2018 8:39 pm
Forum: Hatari
Topic: Raspberry Pi baremetal port?
Replies: 49
Views: 5113

Re: Raspberry Pi baremetal port?

Foxie wrote:Linux has a very bad level of performance with anything that needs a fast response. That means it's a poor choice for MIDI. Even if your thread goes real-time, I'm pretty sure Linux still preempts your thread for up to 5ms every second.


Fortunately, that's not true at all.
by ctirad
Wed Apr 25, 2018 8:55 pm
Forum: Hardware
Topic: PAK68/3 and FRAK/2 schematic
Replies: 18
Views: 2903

Re: PAK68/3 and FRAK/2 schematic

It is possible to get this revison of the Frak/2 board somewhere? Or at least the gerber files?
by ctirad
Tue Mar 20, 2018 8:25 am
Forum: Hardware
Topic: Utilize more than 1GB from SD Card UltraSatan
Replies: 19
Views: 2152

Re: Utilize more than 1GB from SD Card UltraSatan

Here you have the original documentation about possible connections http://joo.kie.sk/?page_id=224
by ctirad
Mon Mar 19, 2018 10:47 pm
Forum: Hardware
Topic: Utilize more than 1GB from SD Card UltraSatan
Replies: 19
Views: 2152

Re: Utilize more than 1GB from SD Card UltraSatan

1st1 wrote:The limitation is not TSO 2.05, but STacy/MegaSTE internal ACSI-SCSI-hostadapter. (Difference between TOS 2.05 & 2.06 is mainly that 2.06 supports legacy ST hardware)


No. The UltraSatan device connects to the ACSI port directly. It does not have anything to do with the MegaSTE internal SCSI.
by ctirad
Mon Mar 19, 2018 8:04 pm
Forum: Hardware
Topic: Utilize more than 1GB from SD Card UltraSatan
Replies: 19
Views: 2152

Re: Utilize more than 1GB from SD Card UltraSatan

I used to have exactly the same problem. It definitely was neither partitioning nor TOS version issue. The SD card size was detected properly by the US itself and both drivers I tried (HDDriver and ICD tools). The partitiong of the whole space passed without any problems, but the TOS had no access t...
by ctirad
Fri Mar 09, 2018 6:51 pm
Forum: Professionals
Topic: VGA adapter with Blow Up and VGA/RGB switch
Replies: 166
Views: 30268

Re: VGA adapter with Blow Up and VGA/RGB switch

What frequency is your pixelclock? For a standard SVGA 1024x768 at 60Hz non interlaced 65MHz is needed. For a nonstandard 50Hz you still need around 52MHz. If you have 50MHz fixed only, try to decrease the refresh frequncy by a couple of Hz to a point that your LCD is still able to handle and then a...
by ctirad
Fri Feb 02, 2018 10:59 pm
Forum: MIDI Software and Hardware
Topic: Steinberg DMA to SCSI II Controller
Replies: 3
Views: 3155

Re: Steinberg DMA to SCSI II Controller

Do you tried it with ICD Pro or Hddriver drivers?
by ctirad
Sun Jan 21, 2018 11:28 am
Forum: Hades / Milan
Topic: ST emulators on Milan
Replies: 19
Views: 2756

Re: ST emulators on Milan

But I want to target real hardware, frankly I don't really care whether it fixes something for Milan/Hades users, I want something from which benefits the whole community. A GFX equipped TTs, PAK030, Falcons(030/040/060) with NOVA, Eclipse, Radeon or SV and Firebee are not real enough to you? Ironi...
by ctirad
Wed Jan 17, 2018 3:47 pm
Forum: Hades / Milan
Topic: ST emulators on Milan
Replies: 19
Views: 2756

Re: ST emulators on Milan

Aranym is mainly intended to run clean programs, and not any demos/games that use lot of hardware tricks, so that does not make much sense. The MIlan is exactly the same case. That's why the ST emulator to run the ST games and demos is needed. Unfortunately, the real 68040 and, I'm afraid, 68060 to...

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