Search found 467 matches

by czietz
Sat Nov 18, 2017 10:55 am
Forum: Coding
Topic: etv_term vector
Replies: 19
Views: 349

Re: etv_term vector

I browsed the Atari ST Profibuch, atleast the 1988 edition I have lists a generic exception handler drawing bombs in assembly language, TOS 1.0 presumably. This indeed seems to call Pterm0() at the end of the bombs. If this is in place for others, I have to test. Newer TOS/GEMDOS versions call Pter...
by czietz
Thu Nov 16, 2017 7:30 pm
Forum: Hardware
Topic: WIFI for all ataris over serial!
Replies: 83
Views: 9180

Re: WIFI for all ataris over serial!

Attached is the firmware for the circuit with RTS & CTS, see above for the schematic. I won't have time to update my web site. But the procedure to program the firmware is the same. As is the setup of the Atari, mostly. You just have to enable RTS/CTS flow control in the serial port settings on ...
by czietz
Thu Nov 16, 2017 7:28 pm
Forum: Hardware
Topic: Atari and external SCSI
Replies: 15
Views: 493

Re: Atari and external SCSI

clh333 wrote:Thanks for the upload. Term power: good point. Possibly what JP1 is for?

-CH-


Being next to the Real Time Clock (RTC) chip: possibly for a battery to keep the clock running? Follow the traces from the header.
by czietz
Thu Nov 16, 2017 7:24 pm
Forum: Coding
Topic: etv_term vector
Replies: 19
Views: 349

Re: etv_term vector

Yes, etv_term is called by Pterm. Your point being? Look what happens after displaying an exception: https://github.com/emutos/emutos/blob/c ... int.c#L586
by czietz
Sat Nov 11, 2017 1:36 pm
Forum: Hardware
Topic: SC1224V2 Monitor Qs
Replies: 3
Views: 190

Re: SC1224V2 Monitor Qs

Manual: http://www.atarimania.com/documents/Ata ... tor_V2.pdf
Though I'm not sure how it'll help with the problem of not having a cable...
by czietz
Fri Nov 10, 2017 2:12 pm
Forum: Hardware
Topic: Inexpensive RTC just wire in?
Replies: 21
Views: 572

Re: Inexpensive RTC just wire in?

I2C has two signals - clock and data. Both are open collector. In an ST you can use the un-used IOA7 and very rarely used IOA6 (GPIO on the monitor port) on the soundchip for this purpose. As long as your RTC handles 5V signals no additional logic would be needed Well, since the soundchip does not ...
by czietz
Wed Nov 08, 2017 8:47 pm
Forum: Hardware
Topic: WIFI for all ataris over serial!
Replies: 83
Views: 9180

Re: WIFI for all ataris over serial!

OK, as requested, here is the schematic for the version with RTS/CTS flow control, in case you want to start building it. As it turns out, the ESP12 S module that I chose already includes the required pull-up/pull-down resistors and miscellaneous circuitry, so the schematic is quite simple. I will p...
by czietz
Wed Nov 08, 2017 7:17 am
Forum: Hardware
Topic: Inexpensive RTC just wire in?
Replies: 21
Views: 572

Re: Inexpensive RTC just wire in?

Is there an article on this somewhere? assuming you dont have a cosmos or something you say 10 but you need a wifi dongle a way to attach it to the atari and then software? Unfortunately, the description is only available in German: http://www.chzsoft.de/site/hardware/diverse-kleinigkeiten-fur-den-...
by czietz
Tue Nov 07, 2017 8:49 pm
Forum: Hardware
Topic: Inexpensive RTC just wire in?
Replies: 21
Views: 572

Re: Inexpensive RTC just wire in?

It is not that hard. But it's still more to do than just soldering some wires to the cartridge port or whatever port. For example there's Till Harbaum's solution for interfacing an I2C bus using the ST's printer port: Right part of http://harbaum.org/till/atari/videotxt/schematic.gif. (Just think of...
by czietz
Tue Nov 07, 2017 5:09 pm
Forum: Hardware
Topic: Inexpensive RTC just wire in?
Replies: 21
Views: 572

Re: Inexpensive RTC just wire in?

It will be quite more complicated to wire in an I2C-based RTC like the DS3231 than the serial-shift-register-based DS1315 used on Exxos' board. Plus you'll need to find someone to write the software for that.
by czietz
Sun Nov 05, 2017 10:53 am
Forum: Hardware
Topic: Monitor for Atari520ST
Replies: 6
Views: 255

Re: Monitor for Atari520ST

Short answer: Probably not. Depends on what the "digital monitor" actually is (manufacturer, specifications, etc.) but the Atari ST has a non-standard video output that is not likely to match your monitor's input. Even if you found a suitable cable the signals are likely to be incompatibl...
by czietz
Thu Nov 02, 2017 5:35 pm
Forum: Hardware
Topic: WIFI for all ataris over serial!
Replies: 83
Views: 9180

Re: WIFI for all ataris over serial!

Laurent, I didn't have time to take the variant with flow control further than breadboard level. However, adding flow control doesn't bring the huge benefit one might imagine. One thing the ESP8266 WiFi microcontroller has very little of is RAM. We're talking about some kilobytes(!) available to the...
by czietz
Wed Nov 01, 2017 1:07 pm
Forum: Coding
Topic: VT52 console output for TOS and Mint with TOSWIN2
Replies: 32
Views: 1014

Re: VT52 console output for TOS and Mint with TOSWIN2

simonsunnyboy wrote:My efforts can be found and reviewed under https://github.com/simonsunnyboy/atarist_conio


Looks nice. I might use that in future console applications for the ST.
by czietz
Wed Nov 01, 2017 12:09 pm
Forum: Coding
Topic: VT52 console output for TOS and Mint with TOSWIN2
Replies: 32
Views: 1014

Re: VT52 console output for TOS and Mint with TOSWIN2

Yes I am! Sorry, I did not remember that I was using NVDI 2.51 as well. So that is probably why it works here. One might even consider this a bug in NVDI, then. :wink: Not tested, but maybe you could output the escape sequences using Cconout()? Or does Cconout expand tabs as well? It does, as menti...
by czietz
Wed Nov 01, 2017 11:16 am
Forum: Coding
Topic: VT52 console output for TOS and Mint with TOSWIN2
Replies: 32
Views: 1014

Re: VT52 console output for TOS and Mint with TOSWIN2

But I will check with more recent versions aswell. In this particular case it's not necessary; current EmuTOS will do the same thing. (And that's correct because it matches Atari TOS behavior.) It was more of a general remark to please not use ancient EmuTOS versions, unless it's for finding a regr...
by czietz
Wed Nov 01, 2017 11:08 am
Forum: Coding
Topic: VT52 console output for TOS and Mint with TOSWIN2
Replies: 32
Views: 1014

Re: VT52 console output for TOS and Mint with TOSWIN2

Exactly what I had expected:
cconws-colors2.PNG


Tells me that you're running something non-standard. Any AUTO-start applications, maybe?
by czietz
Wed Nov 01, 2017 10:49 am
Forum: Coding
Topic: VT52 console output for TOS and Mint with TOSWIN2
Replies: 32
Views: 1014

Re: VT52 console output for TOS and Mint with TOSWIN2

Also happens with TOS 1.04 and TOS 3.06. Now I really wonder which TOS version joska was using for his test.

PS: EmuTOS 0.9.4 is really ancient -- we're close to 0.9.9 -- and as such should be avoided even for testing. You'll never know if you trigger a long fixed bug...
by czietz
Wed Nov 01, 2017 10:25 am
Forum: Coding
Topic: VT52 console output for TOS and Mint with TOSWIN2
Replies: 32
Views: 1014

Re: VT52 console output for TOS and Mint with TOSWIN2

joska, which TOS version are we talking about? This is TOS 2.06:

cconws-colors.PNG


I can see from its source code (as made available by Thorsten Otto) that TABs are indeed expanded. There's no special provision for VT52 escape sequences.
by czietz
Wed Nov 01, 2017 9:52 am
Forum: Coding
Topic: VT52 console output for TOS and Mint with TOSWIN2
Replies: 32
Views: 1014

Re: VT52 console output for TOS and Mint with TOSWIN2

Well, it is documented that Cconws will expand tabs. It seems you're looking for Crawio. PS: Interestingly Atari's own GEMDOS Reference Manual http://dev-docs.exxoshost.co.uk/GEMDOS_Ref_Man_4-4-1986.pdf says about Cconout: "Tabs are not expanded." This is however wrong, at least for TOS 2....
by czietz
Tue Oct 31, 2017 9:48 am
Forum: Coding
Topic: Determining VT52 console dimension
Replies: 35
Views: 874

Re: Determining VT52 console dimension

Can I directly use p_env from the basepage for envp? No, you can't. The envp argument to main is an array of pointers to each individual environment variable. (Much like argv is an array of pointers to each individual command line argument.) int main (int argc, char *argv[], char *envp[]) However, ...
by czietz
Tue Oct 31, 2017 8:55 am
Forum: Hardware
Topic: Marpet Xtra Ram Deluxe and 520ST
Replies: 3
Views: 167

Re: Marpet Xtra Ram Deluxe and 520ST

It is entirely possible that your board doesn't have the resistors. If you look at the schematic at http://www.gossuin.be/images/schemasatari/520ST.pdf, you can see that there were revisions without those. Desoldering is always the cleanest option, but you could also cut the traces on the board near...
by czietz
Fri Oct 27, 2017 4:46 pm
Forum: Hardware
Topic: HARD DISK CRASH
Replies: 2
Views: 244

Re: HARD DISK CRASH

First question: Is your data really valuable? Then do not try anything yourself! Go to a professional data recovery company, pay the four-figure sum they ask for, consider this a lesson learned and devise a backup strategy so you won't have to go through that again. If you're willing to attempt reco...
by czietz
Sun Oct 22, 2017 11:48 am
Forum: FireBee
Topic: FireBee revival
Replies: 30
Views: 2437

Re: FireBee revival

Assuming the planned acquisition of NXP by Qualcomm goes through -- this is not yet decided --, I fear there won't be new developments in the ColdFire product range anymore. Existing CPUs will of course be supported until end-of-life, because there are big customers with contracts. So this is no (im...
by czietz
Sat Oct 21, 2017 8:37 am
Forum: Hardware
Topic: STFM works OK but can't see external floppy drive
Replies: 2
Views: 246

Re: STFM works OK but can't see external floppy drive

Given what you have already ruled out, I suspect the "Drive Select 1" (DS1) line. According to the schematic it comes directly from the YM2149 sound chip, no buffers inbetween. Do you have a logic probe or scope to check if there are pulses on DS1 during boot?
by czietz
Wed Oct 18, 2017 4:31 pm
Forum: Hardware
Topic: How to: recapping the Mega STe power supply
Replies: 11
Views: 760

Re: How to: recapping the Mega STe power supply

Yes, that's the one. I bought from their eBay store, though. I'm sure that with some effort one could either find a modern day replacement optocoupler or even make it work with the CNY17 e.g. by tuning the feedback network. But I'm always a bit reluctant to measure on the mains side of a SMPS, so I ...

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