Search found 593 matches

by czietz
Tue Apr 17, 2018 5:45 pm
Forum: Professionals
Topic: Atari TT power on delay
Replies: 14
Views: 672

Re: Atari TT power on delay

OK, then please check the other components involved in the Power-Good circuit, i.e. in the lower right-hand corner of the schematic. I.e. transistors etc. Does anything look damaged? Are the transistors getting their supply voltages?
by czietz
Mon Apr 16, 2018 8:20 pm
Forum: Professionals
Topic: Atari TT power on delay
Replies: 14
Views: 672

Re: Atari TT power on delay

Power Good is generated by the PSU. If I understand the circuit correctly, the delay for power good is mainly set by C23 and R29. Check that those components have the values specified in the schematics and that their solder joints are OK. R4 and R5 concern the supply voltage of the switching IC whil...
by czietz
Sun Apr 15, 2018 8:54 pm
Forum: Professionals
Topic: Atari TT power on delay
Replies: 14
Views: 672

Re: Atari TT power on delay

Powering up randomly is a strange behavior for a PSU, indeed. Search for cold (i.e. broken) solder joints. They might not be apparent at first glance -- look closely.
by czietz
Sun Apr 15, 2018 5:57 pm
Forum: Professionals
Topic: Atari TT power on delay
Replies: 14
Views: 672

Re: Atari TT power on delay

Oh, man, that sucks! Particularly considering that everything was OK with your PSU; the long startup delay being totally normal with the caps Exxos chose. I feel with you.
TT service manual: https://www.dev-docs.org/docs/htm/searc ... nd=C302483
by czietz
Sun Apr 15, 2018 4:03 pm
Forum: Professionals
Topic: Atari TT power on delay
Replies: 14
Views: 672

Re: Atari TT power on delay

PS: I thought this would be a good occasion to test the latest addition to my electronics lab: a differential probe that allows me to safely measure inside a mains powered switch-mode supply. On the screen shot you can see that it takes about 700 ms for the PSU in my TT to start. The blue trace show...
by czietz
Sun Apr 15, 2018 2:59 pm
Forum: Professionals
Topic: Atari TT power on delay
Replies: 14
Views: 672

Re: Atari TT power on delay

There is definitively some noticeable delay with my two (recapped) TT/MSTE PSUs as well. It's hard to judge without a stop-watch, but I'd say a little less than one second until the power LED goes on. This can also be explained: For the switching controller to start, its supply voltage has to ramp u...
by czietz
Sat Apr 14, 2018 12:04 pm
Forum: Hardware
Topic: no MegaSTE ram expansion over 4MB ?
Replies: 12
Views: 641

Re: no MegaSTE ram expansion over 4MB ?

... but the MonSTer is also available for the MegaSTE: http://www.fairlite.co.uk/AtariKit/monster/monster.html
by czietz
Sat Apr 14, 2018 8:22 am
Forum: Hardware
Topic: Two Rys MK2 or two Tom Rev2 problem
Replies: 2
Views: 174

Re: Two Rys MK2 or two Tom Rev2 problem

You don't have a problem with your STe but probably with poorly designed adapters. On the Atari ST/STe, the right mouse button on the mouse/joystick port 0 and the joystick fire button on port 1 share the same electrical signal. So if the adapter for the mouse actively drives this line high (=right ...
by czietz
Thu Apr 12, 2018 8:59 pm
Forum: News & Announcements
Topic: caTTerror V.1
Replies: 8
Views: 4759

Re: caTTerror V.1

You might also be interested in the Thunder (TT PATA/IDE interface) and Storm (TT Fast-RAM):
http://wiki.newtosworld.de/index.php?ti ... sh_Version
http://wiki.newtosworld.de/index.php?ti ... sh_Version
by czietz
Fri Apr 06, 2018 6:59 pm
Forum: Professionals
Topic: Lightning VME is here
Replies: 17
Views: 1368

Re: Lightning VME is here

I got one question - is there a way to use usb2lan ethernet connectivity under plain TOS? If I understood correctly, the network chip drivers are for MiNT only. This is correct -- right now there is no USB2LAN support under TOS. Someone would have to develop a STinG driver or similar, because the c...
by czietz
Thu Apr 05, 2018 5:22 pm
Forum: Professionals
Topic: Lightning VME is here
Replies: 17
Views: 1368

Re: Lightning VME is here

I like the idea. Applaud the designers. USB is not an easy thing to support especially for an non OS friendly environment like the Atari ST. The Lightning VME wouldn't be possible though without your work (among others) of bringing an USB stack to MiNT and TOS in the first place. Thank you! How man...
by czietz
Wed Mar 28, 2018 5:36 am
Forum: Hardware
Topic: GOTEK in SF314 floppy drive?
Replies: 5
Views: 724

Re: GOTEK in SF314 floppy drive?

But with SF-354 you have to get rid of the original PCB, or at least re-route some signals on it. No. If you have an SF-354 like this http://www.nightfallcrew.com/17/08/2011/atari-sf-354-floppy-drive-second-release/ , you don't have to change anything on the PCB. I'm using it as it is.
by czietz
Tue Mar 27, 2018 7:33 pm
Forum: Hardware
Topic: SF314 repair
Replies: 2
Views: 283

Re: SF314 repair

Let me guess: it is designated "C?" on the PCB? Like so: http://bilgisayarlarim.com/Atari/SF314/03.jpg?

Anyway, the 104 gives it away: it is a capacitor, 104 means 100 nF. CGW would be the manufacturer, "Corning Glass Works"; but any 100 nF ceramic capacitor will do.
by czietz
Wed Mar 21, 2018 6:35 pm
Forum: Coding
Topic: ICD compatible ACIS extension
Replies: 3
Views: 499

Re: ICD compatible ACIS extension

Yes and yes.
by czietz
Wed Mar 21, 2018 11:46 am
Forum: Coding
Topic: ICD compatible ACIS extension
Replies: 3
Views: 499

Re: ICD compatible ACIS extension

Probably there is some documentation somewhere. But it's not that complicated as you can see in https://github.com/emutos/emutos/blob/b2b31ad164e1936cbfe0ee378d791da67958251b/bios/acsi.c#L310. A 0x1F pseudo-command is prepended to the actual (10/12 byte) CDB.
by czietz
Sun Mar 18, 2018 7:35 pm
Forum: Hardware
Topic: NetUSBee TOS driver
Replies: 36
Views: 2799

Re: NetUSBee TOS driver

Perdrix24 wrote:BTW did you see the update last week to storage.prg? I found a bug that Roger Burrows fixed.


I just saw it some hours ago and asked my co-developers of Lightning VME to use that updated storage.prg. Thank you for reporting the bug to FreeMiNT.
by czietz
Sun Mar 18, 2018 7:01 pm
Forum: Hardware
Topic: NetUSBee TOS driver
Replies: 36
Views: 2799

Re: NetUSBee TOS driver

That is fast! Did you write your own proprietary driver? Basically, we adapted the existing ISP1160 driver (like for Ethernat, NetUSBee) a) to work with our VME-bus based hardware, b) to work under TOS as well and c) to be much faster. Given that it's under GPL, as soon as we launch the Lightning V...
by czietz
Sun Mar 18, 2018 4:33 pm
Forum: Hardware
Topic: NetUSBee TOS driver
Replies: 36
Views: 2799

Re: NetUSBee TOS driver

Oh, that's slow indeed. Using the same USB chip (ISP1160) with the Lightning VME -- albeit connected to the VME bus, so the comparison is unfair -- we achieve over 300 kiB/s on the MegaSTE (with its slow 68000 CPU) and over 500 kiB/s on the TT. Unfortunately, I have to say, the mouse and storage dri...
by czietz
Sun Mar 18, 2018 10:45 am
Forum: Applications
Topic: uip-tool
Replies: 144
Views: 37251

Re: uip-tool

dbsys, as I pointed out to you in the Atari-Home.de forum, this is due to incorrect handling of EFILNF, the error that is returned by Fsfirst on a completely empty drive/partition. It is of course up to sqward to fix this.
by czietz
Sun Mar 18, 2018 8:49 am
Forum: Hardware
Topic: CF card + HDDRIVER 10.02 in Falcon
Replies: 9
Views: 939

Re: CF card + HDDRIVER 10.02 in Falcon

When you say "reverse cycles"(?), I assume you mean byte-swapping. No, HDDRUTIL should not bomb there. Did you try the latest version, i.e. HDDRIVER 10.11 as well? Since you already have a license for 10.02, the update is free: http://hddriver.seimet.de/en/prices.html
by czietz
Thu Mar 15, 2018 9:35 pm
Forum: Hardware
Topic: Current purchasable USB Keyboard to Mega STe options
Replies: 24
Views: 1502

Re: Current purchasable USB Keyboard to Mega STe options

Is this new Lightning VME you are making just a single USB port or multiple where mouse and keyboard can be connected? Will it also support USB sticks to read and write to/from? TJ Lightning VME has two USB ports but it supports USB hubs for expansion as well USB mass storage such as USB sticks. Ho...
by czietz
Thu Mar 15, 2018 5:27 pm
Forum: Hardware
Topic: Current purchasable USB Keyboard to Mega STe options
Replies: 24
Views: 1502

Re: Current purchasable USB Keyboard to Mega STe options

As far as I know, there is no keyboard driver for the NetUSBee. USB mice will work, though. We might in the future provide a USB keyboard driver for the Lightning VME USB card we're developing. However, please note that it would still need loading a driver, so for example you cannot abort the TOS me...
by czietz
Thu Mar 15, 2018 8:06 am
Forum: Hardware
Topic: New RAM testing program
Replies: 26
Views: 13304

Re: New RAM testing program

I have just piggy-back upgraded a 520ST using memory chips I've carelessly hot-aired out from other ST machines, and predictably some of the chips have faults. During the hunt to find out which, I realized it would be nice to be able to force a RAM test program like this to test a specific memory s...
by czietz
Wed Mar 14, 2018 7:58 am
Forum: Hardware
Topic: GOTEK in SF314 floppy drive?
Replies: 5
Views: 724

Re: GOTEK in SF314 floppy drive?

You mean: will it work electrically? Yes, it does -- I'm using a Gotek this way (albeit in an SF354). You can then even replace the heavy brick of a power supply by a small 5V only one.
As for the mechanical part: the case of mine was already damaged when I got it; so I didn't mind sawing a bit away.
by czietz
Tue Mar 06, 2018 7:04 pm
Forum: Hatari
Topic: Hatari 2.1.0 has been released
Replies: 123
Views: 10490

Re: Hatari 2.1.0 has been released

ThorstenOtto wrote:But that redefines only fseeko(), which is already a non-standard function


Depends whether you consider POSIX.1-2008 a "non-standard": http://pubs.opengroup.org/onlinepubs/96 ... fseek.html.

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