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by joska
Sat Jul 17, 2021 10:23 pm
Forum: Ym rockin'
Topic: Shades of Circuits - a MaxYMiser album
Replies: 22
Views: 7550

Re: Shades of Circuits - a MaxYMiser album

I guess it's atari.org... Use the direct URL instead: https://atari.joska.no/shadesofcircuits ... ts-1.1.zip
by joska
Fri Jul 16, 2021 10:13 pm
Forum: Ym rockin'
Topic: Shades of Circuits - a MaxYMiser album
Replies: 22
Views: 7550

Re: Shades of Circuits - a MaxYMiser album

Fixed (sort of...) version available here: https://joska.atari.org/shadesofcircuits/ShadesOfCircuits-1.1.zip It does need 3.6Mb free ST-RAM, so on a machine with only 4Mb ST-RAM (regardless of any fast-RAM) you will have to boot a clean setup and possibly change to a low resolution before starting it.
by joska
Tue Jul 13, 2021 7:55 pm
Forum: Ym rockin'
Topic: Shades of Circuits - a MaxYMiser album
Replies: 22
Views: 7550

Re: Shades of Circuits - a MaxYMiser album

It's OK for the player to use Malloc as long as it handles allocation failures properly. Not sure if that's the problem here. After digging a bit I found that two of the sub-songs ("Shades of Circuits" and "The Journey") are actually writing outside the player's allocated memory. The crash on 4Mb ma...
by joska
Tue Jul 13, 2021 10:59 am
Forum: Ym rockin'
Topic: Shades of Circuits - a MaxYMiser album
Replies: 22
Views: 7550

Re: Shades of Circuits - a MaxYMiser album

Thank you for the feedback. I suspect you tested it on Hatari. When doing that I get the same result as you, unless I run the demo (rename circuits to circuits.tos and run it) directly and not from the loader. In that case it works correctly even with "only" 4Mb. However, on a real 4Mb Falcon it doe...
by joska
Mon Jul 12, 2021 3:07 pm
Forum: Ym rockin'
Topic: Shades of Circuits - a MaxYMiser album
Replies: 22
Views: 7550

Re: Shades of Circuits - a MaxYMiser album

And this weekend the music disk release of Shades of Circuits got 3rd place in the Sommarhack 2021 demo competition:

https://demozoo.org/productions/296590/
by joska
Fri Jul 02, 2021 5:27 pm
Forum: FreeMiNT support
Topic: FreeMiNT STE and Hatari
Replies: 16
Views: 823

Re: FreeMiNT STE and Hatari

How do you measure the performance loss?

But yes, the current kernels are too slow for 8MHz systems, to such a degree that you'll loose keypresses when typing fast. I have put the 68000-version of VanillaMiNT on hold because of this.
by joska
Thu Jul 01, 2021 8:19 am
Forum: Hardware
Topic: RGB2HDMI for ST
Replies: 75
Views: 3916

Re: RGB2HDMI for ST

Remember that the bit order on the STE is rRRR, where r is the least significant bit. So 1000 = 1, not 8.
ste.png
(Edit: I see I f***ed up the table when I "pretty-printed" it.)

Connecting the Pi to the shifter pins in the correct order would solve the problem.
by joska
Wed Jun 30, 2021 10:00 pm
Forum: Hardware
Topic: RGB2HDMI for ST
Replies: 75
Views: 3916

Re: RGB2HDMI for ST

I could imagine doing this like interlacing works. In one frame you display the upper left quarter, next frame the upper right, then lower left, next lower right. The framebuffer of the pi displays the last four frames as one Exactly. without any additional connection to the pi you have no way of s...
by joska
Wed Jun 30, 2021 7:51 pm
Forum: Hardware
Topic: RGB2HDMI for ST
Replies: 75
Views: 3916

Re: RGB2HDMI for ST

The purpose is very different here, as it's taping in the original, digital video bits. The ST in completely unaware of the presence of the RGB2HDMI. Exactly. Hardware-wise this is a very simple solution. The "magic" is the software on the Pi. And my suggestion is to compose a bigger framebuffer fr...
by joska
Wed Jun 30, 2021 12:58 pm
Forum: Hardware
Topic: RGB2HDMI for ST
Replies: 75
Views: 3916

Re: RGB2HDMI for ST

Could this be used to create a simple "graphics card" for the STE? Imagine that you set up a virtual screen of 1280x800 pixels in mono. Then you move the "viewport" in a defined pattern in every VBL, covering the entire virtual screen in four frames. The Pi could then compose a 1280x800 image from t...
by joska
Wed Jun 30, 2021 8:14 am
Forum: Hardware
Topic: External Floppy
Replies: 4
Views: 274

Re: External Floppy

These HD kits for ST/STE usually use the HD detect line from the floppy to double-clock the floppy controller when a HD disk is inserted. The controller will now access the drive twice as fast, which is exactly the difference between DD and HD. TOS will read the bootsector the first time you access ...
by joska
Tue Jun 29, 2021 6:25 pm
Forum: Hardware
Topic: External Floppy
Replies: 4
Views: 274

Re: External Floppy

I guess it depends on the implementation of the HD upgrade. If it use the HD detect signal from the floppy to double-clock the floppy-controller then you need to connect this signal to the external drive as well. I remember some commercial HD upgrades that added an extra connector for this signal.
by joska
Sun Jun 27, 2021 12:22 pm
Forum: FreeMiNT support
Topic: DHCP client issue
Replies: 12
Views: 451

Re: DHCP client issue

Mgi you're not running on an Easymint distro. You should be using the DHCP client from Vanillamint if you're wanting that. It's the exact same binary. There is nothing with the DHCP client itself that requires a "unix" setup. However, the client runs a shell script to set up networking whenever a l...
by joska
Sat Jun 19, 2021 9:55 am
Forum: STOS
Topic: More vertical scrolling questions
Replies: 12
Views: 640

Re: More vertical scrolling questions

You are of course right. So single line scrolling would be too memory-consuming in most cases. But two lines would not be so bad.
by joska
Sat Jun 19, 2021 9:34 am
Forum: FreeMiNT support
Topic: FreeMint memory requirements
Replies: 11
Views: 516

Re: FreeMint memory requirements

With NovaVDI all you need to do is to make sure that there is no "video" setting in xaaes.cnf. If you installed VanillaMiNT then the videomode is stored in c:/mint/xa_video.cnf. Delete this file if it exists.

XaAES will now use whatever resolution selected when booting NovaVDI.
by joska
Sat Jun 19, 2021 9:30 am
Forum: STOS
Topic: More vertical scrolling questions
Replies: 12
Views: 640

Re: More vertical scrolling questions

Screen pointer has to be on a 256 byte boundary so your cunning plan wont work. Unless you scroll 5 lines. With 5 buffers you can have smooth vertical scrolling on a plain ST by simply changing the screenpointer. This will of course eat RAM. On an STE you'll need 256Kb for double-buffering a double...
by joska
Sat Jun 19, 2021 9:09 am
Forum: Coding
Topic: A riddle for Pure-C experts
Replies: 7
Views: 459

Re: A riddle for Pure-C experts

Maybe compiled with Turbo C or Pure C 1.0?
by joska
Fri Jun 18, 2021 2:56 pm
Forum: FreeMiNT support
Topic: FreeMint memory requirements
Replies: 11
Views: 516

Re: FreeMint memory requirements

He says " I have now 2MBST and 32MBTT RAM in TT030" so I assume this is a TT.

Edit: Ahh, I see, he's not using the machine he referred to in his first post. No, VanillaMiNT will not run on a 68000.
by joska
Fri Jun 18, 2021 1:54 pm
Forum: FreeMiNT support
Topic: FreeMint memory requirements
Replies: 11
Views: 516

Re: FreeMint memory requirements

Have you seen VanillaMiNT?
by joska
Thu Jun 17, 2021 8:38 pm
Forum: Hardware
Topic: Emulated HArdware 68000
Replies: 20
Views: 1109

Re: Emulated HArdware 68000

masteries wrote: Thu Jun 17, 2021 8:33 pm I also read that this device also provide a GPU replacement,
No, it's not a replacement, all the original chipset is still available. It does not emulate the Amiga chipset but implements a new, more capable "graphics card".
by joska
Thu Jun 17, 2021 8:00 pm
Forum: Hardware
Topic: Emulated HArdware 68000
Replies: 20
Views: 1109

Re: Emulated HArdware 68000

really you are not on Amiga world anymore... the PiStorm scenario is more similar to use an artificially limited Raspberry computer, where the Amiga 500/500 Plus keyboard and mouse are still in use, and probably the audio part It only replaces the CPU, nothing else. But I do agree to some extent, I...
by joska
Thu Jun 17, 2021 7:59 am
Forum: Hardware
Topic: PiStorm - Verilog support needed
Replies: 28
Views: 2018

Re: PiStorm - Verilog support needed

Just wondering - you know how the PiStorm also emulates a graphics card for the Amiga for the HDMI output - would it also be able to do something like emulate a NOVA display for HDMI output? Yes. But it would be much easier to emulate an Atari-style bitplane "graphics card", in that case you would ...
by joska
Wed Jun 16, 2021 7:06 am
Forum: Hardware
Topic: How to boot STe with Ultrasatan as C drive
Replies: 7
Views: 492

Re: How to boot STe with Ultrasatan as C drive

frank.lukas wrote: Mon Jun 14, 2021 8:41 pm Very Good and you can the SD use under Windows too ...
Btw this works with HD-Driver too.
by joska
Tue Jun 15, 2021 5:35 pm
Forum: Hardware
Topic: Emulated HArdware 68000
Replies: 20
Views: 1109

Re: Emulated HArdware 68000

Apart from the hardware challenges, a big issue with the PiStorm on the ST is that there is (atleast not yet) no way to switch back to a cycle exact 8MHz mode, which means that a lot of games and almost all demos will simply not work correctly. However, I would expect that if the PiStorm was ever ma...

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