Search found 163 matches

by SteveBagley
Tue Aug 07, 2018 7:11 am
Forum: Hardware
Topic: Atari ST hardware problem
Replies: 13
Views: 587

Re: Atari ST hardware problem

It’s almost certainly a RAM issue — the pattern you are seeing is TOS's memory test and the machine crashing out before clearing the screen. I had similar problems with an STM (see viewtopic.php?f=15&t=27414 ).

Steve
by SteveBagley
Fri Jul 27, 2018 2:05 pm
Forum: For sale / Wanted
Topic: Wanted: Dead or dying TT030 systemboard
Replies: 8
Views: 493

Re: Wanted: Dead or dying TT030 systemboard

You can still get bare unpopulated TT boards from Best Electronics according to their website -- might be easier than desoldering a dead one¬

Steve
by SteveBagley
Wed Jul 18, 2018 3:10 pm
Forum: Applications
Topic: Thames TV and Cyber Paint
Replies: 0
Views: 180

Thames TV and Cyber Paint

When we got our first 520STE in 1990 (the Power Pack model -- in the UK, from Evesham Micros), it came with a free magazine in the box about the ST and what it could be used for. I suspect it was mainly reprints of bits and bobs from one of the UK ST magazines… I remember one of the articles in the ...
by SteveBagley
Tue Jul 10, 2018 9:22 am
Forum: Hardware
Topic: 520ST Mod - Help ID'ing Please
Replies: 3
Views: 400

Re: 520ST Mod - Help ID'ing Please

Looks like it is soldered across R113 which means it should have the chroma subcarrier clock frequency on it -- where does the other end of the signal goto inside the modulator tin (the lid should lift up)? That'd probably give a better idea of what it's for. At a guess, it's either feeding the subc...
by SteveBagley
Fri Jun 29, 2018 10:46 pm
Forum: Hardware
Topic: MegaSTE: Details of implementation of clock switching and cache?
Replies: 4
Views: 730

Re: MegaSTE: Details of implementation of clock switching and cache?

The PAL equations for some of the MegaSTE PALs are on the AtariHQ cdrom -- see Documents/Atari/TECHDOCS/MSTE/PALS

Steve
by SteveBagley
Fri May 25, 2018 3:46 pm
Forum: Hardware
Topic: Atari STylus (Atari ST Pad)
Replies: 1
Views: 564

Atari STylus (Atari ST Pad)

I've been doing a bit of research* on the Atari STylus/Atari ST Pad (or whatever it was going to be called) and wondered if there were any decent photos of its motherboard kicking about (the best I've found is a 640x480-ish one)? I'm also guessing that the TOS version and 'PenOS' software for it are...
by SteveBagley
Wed May 23, 2018 10:17 pm
Forum: Hardware
Topic: Sparrow inspection
Replies: 37
Views: 4442

Re: Sparrow inspection

Ooh — I wonder whether we could modify Hatari to emulate it :) Regarding TOS ripping, I wrote a tool to rip TOS 2.08 from the ST Book, which is at http://www.atari-forum.com/viewtopic.php?t=20710&start=125#p236871 if it’s of any use. Also, I seem to remember the Sparrow VDI was loaded off the HD...
by SteveBagley
Tue Apr 24, 2018 12:29 pm
Forum: 680x0
Topic: Devpac 3 - Where to start?
Replies: 11
Views: 2390

Re: Devpac 3 - Where to start?

There's a series of articles in ST Format (issues 21 to around issue 28 iirc) on how to write ST games in 68000 machine code with Devpac. That's probably a good place to start (its where I did).

Steve
by SteveBagley
Tue Mar 13, 2018 8:43 am
Forum: News & Announcements
Topic: Magic mac open sourced
Replies: 34
Views: 7897

Re: Magic mac open sourced

https://gitlab.com/AndreasK/AtariX "Bugs and Agenda".."Application should be created with latest XCode" IF Problem = Lates XCode makes code for latest macOS THEN This might help: https://github.com/devernay/xcodelegacy I hope that somebody compile version for older OS X version....
by SteveBagley
Wed May 10, 2017 9:06 am
Forum: Hardware
Topic: STBook/STylus test board found
Replies: 6
Views: 1502

Re: STBook/STylus test board found

I just found this board in the basement. Am I correct: it looks like a test board for an ST Book? Fascinating! There's 128k of ROM and 64K of RAM on the board but also a three-wire serial EEPROM… There's also two GAL/PALs (one for I/O, one for Memory?) on there as well… Any chance you could dump th...
by SteveBagley
Mon May 08, 2017 11:39 am
Forum: Applications
Topic: Petition: Open Source Geneva + Neodesk
Replies: 20
Views: 4816

Re: Petition: Open Source Geneva + Neodesk

Thank you all for signing. I'm positively surprised to have this many signatures in 24h. Here's a collection of Geneva & Neodesk articles with a interview with the legend himself: http://www.atariancomputing.com/blog/Geneva-Neodesk Several of the images are broken in that for me -- the ones on ...
by SteveBagley
Tue Mar 07, 2017 11:29 am
Forum: Coding
Topic: Help Compiling TOS 2.06/2.08/3.06 in any language
Replies: 160
Views: 23900

Re: Help Compiling TOS 2.06/2.08/3.06 in any language

I already looked into that, but stopped when i found out that apparently some of the sources of 4.04 where compiled by Lattice C rather than Alcyon. And i have no idea which version they used. There are also quite a lot compiler-switches which have an influence on the generated code, so it might be...
by SteveBagley
Thu Feb 23, 2017 6:29 pm
Forum: Hardware
Topic: Modded Atari 1040 STF, seeking help identifying mods
Replies: 5
Views: 1404

Re: Modded Atari 1040 STF, seeking help identifying mods

The middle switch makes the monitor image go funky, so overscan could be it, although my monitor doesn't seem to support that mode. It will -- overscan needs a software patch applied to make it work... Why would it need a RTC (and so many wires attached)? The ST (by default) doesn't have a clock so...
by SteveBagley
Thu Feb 23, 2017 4:22 pm
Forum: Hardware
Topic: Modded Atari 1040 STF, seeking help identifying mods
Replies: 5
Views: 1404

Re: Modded Atari 1040 STF, seeking help identifying mods

I'd hazard a guess that the battery is connected to a real-time clock chip (the 8573P is a Philips clock chip) on the board with the 40-pin socket (I imagine the socket was used original to prototype it externally). The wires around the TOS ROMs are probably for some form of TOS switcher (although t...
by SteveBagley
Fri Feb 17, 2017 8:43 am
Forum: Hardware
Topic: 1040STe+ (STe w/ 286 CPU) PCB layout
Replies: 43
Views: 6558

Re: 1040STe+ (STe w/ 286 CPU) PCB layout

Using a photo of the AT Speed (http://wiki.newtosworld.de/index.php?title=Datei:AT_Speed_Platine_von_Sack.jpg) I exemplarily followed some traces in the 1040STe+ layout that I found -- and they indeed seem to match. However, as there is no way of knowing what's inside the PALs/GALs, one cannot know...
by SteveBagley
Thu Feb 16, 2017 11:07 pm
Forum: Hardware
Topic: 1040STe+ (STe w/ 286 CPU) PCB layout
Replies: 43
Views: 6558

Re: 1040STe+ (STe w/ 286 CPU) PCB layout

From what I've seen, apart from the 286 and the IDE interface, this would have been a regular STe without any additional video hardware. Also, I think DOS games weren't the primary target, but rather productivity / business software -- much like with the AT Speed add on cards. Not just like the AT-...
by SteveBagley
Thu Sep 29, 2016 3:36 pm
Forum: Chat forum [ENG]
Topic: Were Atari just out of their league in the end?
Replies: 54
Views: 11167

Re: Were Atari just out of their league in the end?

wongck wrote:LOL waited 7 mins for the word Atari


My Falcon and MegaSTE are visible before the titles :)

Steve
by SteveBagley
Sun Sep 18, 2016 8:11 am
Forum: Other emulators & tools
Topic: 68000 Exceptions on 68030 Emu & Emu Style?
Replies: 6
Views: 5066

Re: 68000 Exceptions on 68030 Emu & Emu Style?

Trouble 2 Emulation Model: Using a lazy JIT emulation I am thus far getting slower results than using a simple hand optimized ARM Assembly software emulation. Is it worth it to keep on attempting to get the lazy JIT up to speed, or should I just focus on the software emulation? It's a good question...
by SteveBagley
Wed Sep 14, 2016 5:24 am
Forum: Professionals
Topic: Another Falcon in need of resuscitation..Please help! :-)
Replies: 49
Views: 9652

Re: Another Falcon in need of resuscitation..Please help! :-)

The other thing to watch out for is if the Falcon doesn't have an expansion card fitted (which yours sounds like it doesn't) then it needs a jumper fitted over two of the pins on the expansion connector (I can't remember which off hand). I'd have expected the power light to have come on -- although ...
by SteveBagley
Tue Sep 06, 2016 8:06 am
Forum: Hardware
Topic: 2 bombs on my falcon?
Replies: 11
Views: 2127

Re: 2 bombs on my falcon?

Have you tried it unplugging the IDE drive? My Falcon gave weird errors when I got it due to a failed internal HD.

Steve
by SteveBagley
Thu Sep 01, 2016 8:09 pm
Forum: Hardware
Topic: NoMMU Linux on ROM
Replies: 23
Views: 5148

Re: NoMMU Linux on ROM

There is still work to do on the software side. I need to compile a toybox or busybox shell so the kernel can actually be used for something. With a NetUSBee adapter, it will be possible to surf the web on an ST using Linux, I hope. It might be worth taking a look at the Alpine Linux distribution -...
by SteveBagley
Thu Sep 01, 2016 1:39 pm
Forum: Chat forum [ENG]
Topic: Another company that used Atari
Replies: 5
Views: 2311

Re: Another company that used Atari

It's interesting how many people I've interviewed recently who did a computer science or similar university degree since 2000 and have no idea how computers work. And so many developers rely on frameworks and couldn't live without google, it's amazing. It's al fine when things work, but when they d...
by SteveBagley
Tue Aug 30, 2016 7:58 pm
Forum: For sale / Wanted
Topic: For Sale: Atari ST Book
Replies: 28
Views: 7551

Re: For Sale: Atari ST Book

BTW, the "STE" confusion may be due to the Wikipeida article saying the ST Book is STE based (but clearly stating the screen is monochrome) From looking at the schematics and reading the technical specs -- the ST Book is a hybrid of the STe and ST. It has the STE's COMBO MCU combined with...
by SteveBagley
Tue Aug 02, 2016 8:35 am
Forum: Chat forum [ENG]
Topic: Atari in films
Replies: 56
Views: 18849

Re: Atari in films

For those who like spotting these things, there's an Atari ST quite visible at the start of the latest Jason Bourne movie. Steve This seems odd in 2016 - is there an '80s / '90s flashback scene or something? No its set in 2016 during a scene set in what's best described as a slightly more undergrou...
by SteveBagley
Mon Aug 01, 2016 10:49 pm
Forum: Chat forum [ENG]
Topic: Atari in films
Replies: 56
Views: 18849

Re: Atari in films

For those who like spotting these things, there's an Atari ST quite visible at the start of the latest Jason Bourne movie.

Steve

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