Search found 433 matches

by Arne
Thu May 24, 2018 5:58 am
Forum: Hardware
Topic: Recommended accelerator options for ST
Replies: 27
Views: 730

Re: Recommended accelerator options for ST

Well, the best accelerators for ST/STE are the old classic ones, with cache. Like ICD's AdSpeed and the Mega STE. Well, isn't AdSpeed affected with compatibility problems with IDE? Without cache, memory access is not improved at all, which basically is like replacing your car engine with a faster o...
by Arne
Tue May 15, 2018 10:20 am
Forum: C / PASCAL etc.
Topic: Retrieve application filename
Replies: 6
Views: 357

Re: Retrieve application filename

Thanks to all of you. My application shall be run from the AUTO folder, so the advised methods won't work for me. I think I have found a solution for my problem (not getting the filename, but the underlying problem). Anyway: I do add a cookie but the cookie's value (uint32_t) is too small to take al...
by Arne
Mon May 14, 2018 1:34 pm
Forum: C / PASCAL etc.
Topic: Retrieve application filename
Replies: 6
Views: 357

Retrieve application filename

Got a problem retrieving the filename of my own application at runtime. As argv[0] is empty under TOS I tried to get the filename via DTA: DTA myDTA; memcpy(&myDTA, Fgetdta(), sizeof(DTA)); printf(">%s<\n\r", myDTA.d_fname); I'm using Pure C 1.1 and if I enter the debugger via Alt-D I ...
by Arne
Mon May 14, 2018 6:58 am
Forum: Coding
Topic: Data writing
Replies: 6
Views: 413

Re: Data writing

rockyone wrote:Apparently, the problem does not occur during writing


What is "the problem"?
by Arne
Mon May 14, 2018 5:32 am
Forum: Coding
Topic: Data writing
Replies: 6
Views: 413

Re: Data writing

Think about it: what happens when you move the mouse?
by Arne
Sat May 12, 2018 11:09 am
Forum: Coding
Topic: How to detect all available memory (used and free)
Replies: 9
Views: 539

Re: How to detect all available memory (used and free)

Jo is right. You can have more than just one section of Alt.RAM at the same time - see MagnumST. Then the contents of $5A4 is probably not non-ambiguous.
by Arne
Fri May 11, 2018 3:39 pm
Forum: Coding
Topic: How to detect all available memory (used and free)
Replies: 9
Views: 539

Re: How to detect all available memory (used and free)

That method works for ST-RAM only, but not for Alt-RAM.
by Arne
Thu May 03, 2018 8:59 am
Forum: Hardware
Topic: Replacing 1040 ST FM keyboard with a 520 ST FM one - Drive's Busy Light always on
Replies: 5
Views: 601

Re: Replacing 1040 ST FM keyboard with a 520 ST FM one - Drive's Busy Light always on

Dal wrote:Probably some bleed from a clock. More a design issue than a fault.


Nope.
It's not a fault. The BIOS checks during VBI processing if a disk change occurred.
by Arne
Wed Mar 21, 2018 3:26 pm
Forum: Coding
Topic: ICD compatible ACIS extension
Replies: 3
Views: 763

Re: ICD compatible ACIS extension

Thanx,
so you mean the first byte looks like this

Code: Select all

X X X 1 1 1 1 1

with XXX being the ACSI target number?
But what follows? Standard 10/12Byte SCSI command?
by Arne
Wed Mar 21, 2018 7:18 am
Forum: Coding
Topic: ICD compatible ACIS extension
Replies: 3
Views: 763

ICD compatible ACIS extension

Hi,
is there any documentation around about the ICD extensions for ACSI to send 10byte commands?

thanx, Arne
by Arne
Wed Mar 14, 2018 6:59 pm
Forum: 680x0
Topic: BusError Handler
Replies: 0
Views: 747

BusError Handler

I'm writing some code to handle a hardware device I am working on. It is mapped into the 68k's address space and my hardware will generate /DTACK if addressed. Now I want to detect it via software i.e. access it and in case of a bus-error handle the exception instead of letting TOS throw two bombs. ...
by Arne
Wed Mar 14, 2018 2:49 pm
Forum: Applications
Topic: Looking for INSJAR
Replies: 3
Views: 629

Re: Looking for INSJAR

Merci beaucoup :-D
by Arne
Wed Mar 14, 2018 1:49 pm
Forum: Applications
Topic: Looking for INSJAR
Replies: 3
Views: 629

Looking for INSJAR

Can anyone point me to a downloadable archive of the INSJAR program (http://toshyp.atari.org/en/003007.html#Cookie_2C_20INSJ)that installs a cookie jar and fills it with some standard cookies?
by Arne
Wed Mar 14, 2018 1:43 pm
Forum: News & Announcements
Topic: The FPGA and non-Atari cores deserve the cover of this forum?
Replies: 69
Views: 4688

Re: The FPGA and non-Atari cores deserve the cover of this forum?

I really dislike to see first 5 RECENT TOPICS polluted with FPGA stuff. I occasionally open atari-forum.com just to see 5 recent topic and almost always I see 5 topics about FPGA in "recent topics". And I am not interested in FPGA at all. There is no need to prohibit anything, just move t...
by Arne
Tue Mar 13, 2018 7:03 pm
Forum: Hardware
Topic: What is that ROM PORT peripheral?
Replies: 3
Views: 476

Re: What is that ROM PORT peripheral?

Seems to be an interface for this bus: https://en.wikipedia.org/wiki/Europe_Card_Bus IIRC it was a DIY project of the German c't magazine. At least the small yellow PCB at the left hand end of the flat-ribbon cable is a ROM-Port buffer. Useful to protect the ST and for extending the port's signals.
by Arne
Tue Feb 27, 2018 9:48 am
Forum: Hardware
Topic: Falcon Video extension
Replies: 14
Views: 1390

Re: Falcon Video extension

Do you refer to something like this: http://info-coach.fr/atari/documents/myFAQ.php Section Falcon video?
by Arne
Mon Feb 26, 2018 2:29 pm
Forum: Hardware
Topic: How much RAM in your Atari ST?
Replies: 64
Views: 9487

Re: How much RAM in your Atari ST?

3meg isn't a supported RAM config on the ST, you probably have 2.5meg :) You are not up-to-date. 3MB IS possible. I had it one of mine, too. how does that work ? 2 meg add on card with 1 meg onboard ? Exactly. 2MB bank must be bank #1. With some TTL (I used a GAL) /RAS and /CAS lines are generated ...
by Arne
Mon Feb 26, 2018 11:43 am
Forum: Hardware
Topic: How much RAM in your Atari ST?
Replies: 64
Views: 9487

Re: How much RAM in your Atari ST?

spiny wrote:3meg isn't a supported RAM config on the ST, you probably have 2.5meg :)

You are not up-to-date. 3MB IS possible. I had it one of mine, too.
by Arne
Fri Feb 16, 2018 5:22 am
Forum: Hardware
Topic: How much RAM in your Atari ST?
Replies: 64
Views: 9487

Re: How much RAM in your Atari ST?

(double post - please delete)
by Arne
Fri Feb 16, 2018 5:17 am
Forum: Hardware
Topic: How much RAM in your Atari ST?
Replies: 64
Views: 9487

Re: How much RAM in your Atari ST?

Back in the day 2.5Mb was quite common on STFs. With a GAL or two 74 TTL you could resurrect the last 512KB again. At least TOS 2.06 counted up to 3072KB but I think that TOS 1.xx supported 3MB, too. Wasn't 4 meg the max on ST models ? In general: yes. Besides the well known Alt.RAM expansion that ...
by Arne
Tue Jan 16, 2018 9:11 am
Forum: Hades / Milan
Topic: Milan maximum RAM
Replies: 12
Views: 3795

Re: Milan maximum RAM

I remember having a TT-RAM-card in my TT where I would have to manually add jumpers to these pins as the SIMMs I had left all these pins floating even though they were 32Mb SIMMs. Might that be an aixTT? MagnumTT has additional jumpers/pull-ups in case the PD pins are not set (correctly). I guess t...
by Arne
Mon Jan 15, 2018 9:16 am
Forum: Chat forum [ENG]
Topic: Surviving STs
Replies: 32
Views: 2720

Re: Surviving STs

LaceySnr wrote:To be fair, Atari030 does have some things I'd generally file under "unobtainium" ;)


Eagle, Medusa, Milan... :?:
by Arne
Fri Jan 12, 2018 4:50 am
Forum: Hardware
Topic: I borked my 520ST Help?!?
Replies: 17
Views: 1386

Re: I borked my 520ST Help?!?

"T0 MFP Timer" Service Manual says that's a problem with the MFP timer(s). Or is protocol here to just remove/replace the 68901 MFP? NO. Protocol is to find the error. Take a scope, the schematics and check the clocks(2.xMHz and 4MHz), the /CS line and see if /DTACK is activated shortly a...
by Arne
Mon Jan 08, 2018 6:00 pm
Forum: Hardware
Topic: I borked my 520ST Help?!?
Replies: 17
Views: 1386

Re: I borked my 520ST Help?!?

Blur2040 wrote:For whatever reason, and despite that my 1040 ST works just fine, I've gone ahead and reached out to Best electronics to get a diagnostic cart.

Still have some available in my shop.

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