Search found 56 matches

by rj1
Fri Nov 10, 2017 11:53 am
Forum: Games
Topic: Daimakaimura (Ghouls 'n Ghosts) for the Atari STE
Replies: 337
Views: 41848

Re: Daimakaimura (Ghouls 'n Ghosts) for the Atari STE

Let us download :)
by rj1
Sat Nov 04, 2017 7:40 pm
Forum: Games - General
Topic: Enduro Racer Progress update
Replies: 19
Views: 1336

Re: Enduro Racer Progress update

Nice that you included fps counter :) First Atari game to have this?

This version works on 50MHz 68030 STE just fine.
I'm getting 10-12 fps with CPU caches disabled and 16 fps with caches on, though then the logic and music starts to run noticably faster...
by rj1
Tue Oct 31, 2017 3:01 pm
Forum: Games
Topic: Daimakaimura (Ghouls 'n Ghosts) for the Atari STE
Replies: 337
Views: 41848

Re: Daimakaimura (Ghouls 'n Ghosts) for the Atari STE

Test1 kinda works in about 1 in 10 times on a boosted 50MHz 030 STE, CPU caches off. There are some glitches, could that be blitter issues? The 030 board is still in development so it could be an issue on hardware side as well. https://www.youtube.com/watch?v=kqaSq5BWu60 Wow, interesting results. T...
by rj1
Sat Oct 21, 2017 3:50 pm
Forum: Games
Topic: Daimakaimura (Ghouls 'n Ghosts) for the Atari STE
Replies: 337
Views: 41848

Re: Daimakaimura (Ghouls 'n Ghosts) for the Atari STE

Test1 kinda works in about 1 in 10 times on a boosted 50MHz 030 STE, CPU caches off.
There are some glitches, could that be blitter issues?
The 030 board is still in development so it could be an issue on hardware side as well.

https://www.youtube.com/watch?v=kqaSq5BWu60
by rj1
Wed Jul 05, 2017 7:41 am
Forum: Games
Topic: Daimakaimura (Ghouls 'n Ghosts) for the Atari STE
Replies: 337
Views: 41848

Re: Daimakaimura (Ghouls 'n Ghosts) for the Atari STE

However, the reason to port this game to the Atari STE is to hope that the "best case" scenario in game is always less performance demanding than the "worst case". Keep in mind that the CPS1 CPU is almost completely busy handling the enemy "AI" even without having to c...
by rj1
Wed Mar 22, 2017 12:05 pm
Forum: News & Announcements
Topic: chipmunk (serial numbers database) for Atari computers
Replies: 36
Views: 6290

Re: chipmunk (serial numbers database) for Atari computers

You should add option for GSTMCU integrated blitter, which now is lost.
Suggesting:
'present (integrated)'
by rj1
Tue Mar 21, 2017 8:04 am
Forum: Guides
Topic: [SOLVED] Atari 520 STFM short circuit in main board +5V
Replies: 6
Views: 1889

Re: Atari 520 STFM short circuit in main board +5V

No good circuit will show you a 0ohm resistance on supply. Diagnose cart won't help if you have a short. If you have a high resolution multimeter and sharp probes you could narrow it down to a small area. That is what I did and it worked pretty well, there was a visible difference in resistance on s...
by rj1
Sat Mar 18, 2017 11:49 am
Forum: Guides
Topic: [SOLVED] Atari 520 STFM short circuit in main board +5V
Replies: 6
Views: 1889

Re: Atari 520 STFM short circuit in main board +5V

Might want to check decoupling capacitors.
I once had a short on a decupling 100nF ceramic capacitor next to one of RAM chips, on Mega 1.
Ceramic caps short sometimes when there is a physical force on the PCB - they might break inside.
by rj1
Tue Mar 14, 2017 7:37 am
Forum: Professionals
Topic: Falcon serial numbers
Replies: 66
Views: 8835

Re: Falcon serial numbers

Also if the STE case has metal screw inserts or if it doesn't have them.
Images borrowed from ebay.

Metal inserts present:
inserts.jpg

No metal inserts:
noinserts.jpg
by rj1
Tue Mar 14, 2017 6:08 am
Forum: Professionals
Topic: Falcon serial numbers
Replies: 66
Views: 8835

Re: Falcon serial numbers

I start with making database where we could type serial numbers (and additional) data about our Atari computers. Please take a look at: http://milan.kovac.cc/atari/chipmunk/ !!! and please note that there is no functionality so do NOT bother to type data !!! I will add tomorrow PHP code for databas...
by rj1
Fri Mar 03, 2017 8:32 am
Forum: Coding
Topic: 68030 PMMU config help needed
Replies: 17
Views: 2395

Re: 68030 PMMU config help needed

Thanks for all the replies. With the 68020 in place with have no blitter or DMA issue (but there is no data cache on the 68020). I found 2 contradictory statements in the various things I read online. One says the all the ST RAM should be cacheable, and one says it shouldn't be because of the blitte...
by rj1
Thu Feb 16, 2017 1:55 pm
Forum: Professionals
Topic: Atari Falcon ECO - Sound Crackle During DMA Playback
Replies: 7
Views: 1468

Re: Atari Falcon ECO - Sound Crackle During DMA Playback

Yes I do believe your solution helped people with this. I'm just curious as to this particular official Atari fix. I have some cracking noise under Ace Tracker so going to try this myself.
by rj1
Thu Feb 16, 2017 12:54 pm
Forum: Professionals
Topic: Atari Falcon ECO - Sound Crackle During DMA Playback
Replies: 7
Views: 1468

Re: Atari Falcon ECO - Sound Crackle During DMA Playback

Yep, but has anyone actually tried simply removing the C208 before?
by rj1
Wed Feb 15, 2017 8:34 am
Forum: Professionals
Topic: Falcon serial numbers
Replies: 66
Views: 8835

Re: Falcon serial numbers

Mine are:
Y4 33 0 2 000059 - #59 pilot production?
B3 34 2 2 000192 - #192

They both differ in terms of PCB color a lot, just as if they were done in 2 different fabs (Y4 vs B3).
One is dark green, the other is more pale green.
by rj1
Wed Feb 15, 2017 8:21 am
Forum: CosmosEx
Topic: Debugging issues with STE
Replies: 31
Views: 6710

Re: Debugging issues with STE

I didn't do much anymore. I simply bridged 244 and 245 over, which just works fine ATM. I have the inline resistors, yes. Interesting is Atari changed the resistor values at some point in time, according to available schematic: 68R in STE and TT, 68R in MSTE REV2 schematic from April 1990 but then r...
by rj1
Wed Feb 15, 2017 7:59 am
Forum: Professionals
Topic: Atari Falcon ECO - Sound Crackle During DMA Playback
Replies: 7
Views: 1468

Re: Atari Falcon ECO - Sound Crackle During DMA Playback

You are right, there are 2 more Atari documents on installing clock patch for sound issue.
Wonder which method is the "latest" one.
Obviously they were trying different solutions.

AtariFalconClockPatch2.jpg
AtariFalconClockPatch_by Atari.jpg
by rj1
Tue Feb 14, 2017 7:58 pm
Forum: Professionals
Topic: Atari Falcon ECO - Sound Crackle During DMA Playback
Replies: 7
Views: 1468

Atari Falcon ECO - Sound Crackle During DMA Playback

No idea if this was brought to attention before? Atari ECO on DMA sound issues, mentions removing/shorting DMA clock (CPUCLKA) inline resistor R221 and removing C208, both near the Combel (C208 is underside the board.) This action also is a reason for a new PCB and schematic revisions, details in th...
by rj1
Mon Feb 13, 2017 2:33 pm
Forum: Hardware
Topic: BAD DMA - Myth or fact ?
Replies: 75
Views: 24246

Re: BAD DMA - Myth or fact ?

Interesting info, thanks.

What about removing (bridging) '245 and '244 buffers on data and control lines - can you check if it has any effect on corrupting drive with those 2 -38 DMAs?
For my badly behaving STE, this actually seems the best fix I tried so far... still testing though...
by rj1
Mon Feb 13, 2017 7:35 am
Forum: Professionals
Topic: Here is a list of all Falcon caps
Replies: 20
Views: 3507

Re: Here is a list of all Falcon caps

By the way: It isn't the easiest job. A lot of the caps are soldered on to the main copper earth which makes them very difficult to remove. With enough heat, solder and flux you can do it safely. Just make sure you have good tools, a good station that you can adjust the temperature, some solder-abs...
by rj1
Mon Feb 13, 2017 7:31 am
Forum: Hardware
Topic: program EPROM’s of TOS 1.04US for a STacy?
Replies: 26
Views: 3033

Re: program EPROM’s of TOS 1.04US for a STacy?

Just a hint. Since you have TL866a/MiniPro software, you can use it to split the TOS image file (no need for this ROMSPLIT software). When loading, select: - for LO EPROM: Load Mode -> Load a high byte of a WORD(2 bytes) - for HI EPROM: Load Mode -> Load a low byte of a WORD(2 bytes) So you basicall...
by rj1
Thu Feb 09, 2017 1:36 pm
Forum: Professionals
Topic: Here is a list of all Falcon caps
Replies: 20
Views: 3507

Re: Here is a list of all Falcon caps

By the way: It isn't the easiest job. A lot of the caps are soldered on to the main copper earth which makes them very difficult to remove. With enough heat, solder and flux you can do it safely. Just make sure you have good tools, a good station that you can adjust the temperature, some solder-abs...
by rj1
Mon Feb 06, 2017 6:38 am
Forum: Hardware
Topic: 68020 booster
Replies: 137
Views: 38785

Re: 68020 booster

As Rodolphe was saying, we need your opinion here.
I'm more inclined to simple, no-expansion STE version - that means 020 CPU, fast 32bit TOS, maybe fast RAM (SRAM).
For MSTE, expansions are no problem there.
by rj1
Sat Feb 04, 2017 8:40 pm
Forum: Chat forum [ENG]
Topic: New addition to the collection
Replies: 22
Views: 3550

Re: New addition to the collection

14MB is nice! Depending on what is wrong with Conner drive, you might be able to at least try something to rescue data. I could "fix" my 64MB CP-2064 Conner that came with Falcon by opening it and helping (using a finger) heads to move out of the parking position. It then starts and all th...
by rj1
Sat Jan 21, 2017 2:59 pm
Forum: Hardware
Topic: 68020 booster
Replies: 137
Views: 38785

Re: 68020 booster

We now have 32bit "fast" TOS 2.06 working in our board, with 0 wait states with 68020@32MHz on a STE: 32FT.png System is very quick and responsive now. Also blitter works fine, with read operations from fast TOS as well. Still the design has to be verified on machines with integrated Blitt...
by rj1
Sun Jan 08, 2017 10:29 pm
Forum: CosmosEx
Topic: Debugging issues with STE
Replies: 31
Views: 6710

Re: Debugging issues with STE

At the moment I'm using internal STE PSU for both STE and CE. There is some more interesting facts. First I noticed that DIL sockets I put in place of '244 and '245 were low quality ones with contact issues (IC was a bit loose when inserted), so I fixed that. After that, I can rule out the '245 IC (...

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