Search found 81 matches

by tzok
Sat Dec 15, 2018 9:01 pm
Forum: Applications
Topic: Y2K date fix for 2017?
Replies: 12
Views: 3743

Re: Y2K date fix for 2017?

Some time ago I have described, that TOS handles date correctly until year 2027 without ANY modifications. It holds years since 1900 in binary value on 7 bits. I've been interfacing an RTC through IKBD. The stock Atari Control Panel tries to send a year value of $B8 for 2018 (it is 118 in "pseu...
by tzok
Mon Dec 10, 2018 2:08 pm
Forum: Professionals
Topic: Atari Falcon IDE to CF
Replies: 27
Views: 1370

Re: Atari Falcon IDE to CF

The HDUTIL.PRG is a kind of menu/launcher tool for various other tools. One of the tools allows you to install and another one to configure (R/W Cache, SCSI clock, color resolution) the ICD Boot.

BTW
PPera was right in what he'd said.
by tzok
Thu Nov 29, 2018 6:21 pm
Forum: Hardware
Topic: Atari Test Cart
Replies: 12
Views: 874

Re: Atari Test Cart

Falcon Cart is 128kB, and it needs ROM4 to be the most significant bit of the Address Bus. I've got on of the 64kB slot only multicatrs, and I thing it would be great if someone would convert SysInfo and YAART that they could be run from this cartridge it has exactly 2 slots free (actually 8 + 2, be...
by tzok
Sun Nov 25, 2018 7:59 pm
Forum: Hardware
Topic: Very Sick MSTE - Need some help to bring back to life if posible
Replies: 16
Views: 4351

Re: Very Sick MSTE - Need some help to bring back to life if posible

4 bombs is illegal instruction error, likely to be caused by a stuck data or address bus line. I was recently "fighting" with a SuperMon cartridge that started to throw 4 bombs during startup. Reason - loose A5 pin on one of the ROMs. So likely you have killed your TOS 2.06 ROMs. No big de...
by tzok
Thu Nov 15, 2018 10:50 pm
Forum: Hardware
Topic: Atari STE top/bottom case replacement
Replies: 5
Views: 716

Re: Atari STE top/bottom case replacement

I forgot about stereo RCAs, but that shouldn't be a problem to drill two holes. Jaguar paddle ports will not collide with STFM bottom case, they just won't be accessible.
by tzok
Thu Nov 15, 2018 2:50 pm
Forum: Hardware
Topic: Atari STE top/bottom case replacement
Replies: 5
Views: 716

Re: Atari STE top/bottom case replacement

Top case is the same, but bottom part in STe has additional cut outs for 2 Jaguar type joypads.
by tzok
Mon Nov 05, 2018 6:35 pm
Forum: Hardware
Topic: Power Supply Centuriontech or Exxos
Replies: 21
Views: 6030

Re: Power Supply Centuriontech or Exxos

Today I've got an RD-50A and it fits even better:
Image
by tzok
Fri Nov 02, 2018 1:37 pm
Forum: Professionals
Topic: Falcon diagnostic cart
Replies: 20
Views: 6425

Re: Falcon diagnostic cart

Yes, you have a link on the schematics:
https://drive.google.com/open?id=13qD56 ... iPndieUb_K

See if your cart has EEPROM A15 line connected to CART /ROM4 line or this A15 line is controlled by a switch (in your case a counter based soft-switch).
by tzok
Fri Nov 02, 2018 11:43 am
Forum: Professionals
Topic: Falcon diagnostic cart
Replies: 20
Views: 6425

Re: Falcon diagnostic cart

Slot size depends on high address selection circuit (ROM switch), but in your cart it is likely to be 64kB, not 128kB. You have to look at the address decoding logic to tell if you can use only 64kB slots or also 128kB ones. Usually you can't mix slot sizes (but on this linked above it actually is m...
by tzok
Fri Oct 05, 2018 6:16 pm
Forum: Hardware
Topic: Power Supply Centuriontech or Exxos
Replies: 21
Views: 6030

Re: Power Supply Centuriontech or Exxos

I have fitted a Mean-Well RT-65B in my STf. It barely fits there, but works just fine:
Image
by tzok
Mon Oct 01, 2018 4:15 pm
Forum: Hardware
Topic: Insert disk....
Replies: 6
Views: 901

Re: Insert disk....

In order to TOS detect a disk change, the disk must be write protected, yet most games don't rely on TOS, but rather pools the FDD or waits for a key/fire.
by tzok
Sun Sep 30, 2018 6:54 pm
Forum: Hardware
Topic: STe - Bad DMA Chip
Replies: 166
Views: 32248

Re: STe - Bad DMA Chip

Jeff_HxC2001 wrote:This was the Atari ST 32768 Colour Showdown. Some pictures aren't displayed correctly with an hcmos 68k.

I haven't noticed anything unusual with this demo on my 68HC000 equipped STe. Maybe I don't know what to look for.
by tzok
Fri Sep 28, 2018 8:41 pm
Forum: MiST
Topic: Can't find a US 2.06 TOS image
Replies: 20
Views: 4045

Re: Can't find a US 2.06 TOS image

Some of that was based on the floppy disks themselves. Sometimes memories are deceptive ;) DS DD - 2 sides * 80 tracks * 9 sectors per track * 512 bytes per sector = 737280 bytes (720 KiB) DS HD - 2 sides * 80 tracks * 18 sectors per track * 512 bytes per sector = 1474560 bytes (1440 KiB = 1.406MiB...
by tzok
Fri Sep 28, 2018 8:25 pm
Forum: Hardware
Topic: Falcon crashing when moved
Replies: 14
Views: 1306

Re: Falcon crashing when moved

The trace on right to C87 is not "slightly corroded" it is completely dissolved... same with 3 vias below it - they're probably gone as well.
by tzok
Fri Sep 28, 2018 8:20 pm
Forum: Hardware
Topic: Attic find STFM FDD boot problems
Replies: 3
Views: 644

Re: Attic find STFM FDD boot problems

Greenious wrote:Lift your atari a few inches above the table and let it drop
...but don't do this with an STe as it will break into pieces. For some reason their cases became much more fragile after years, than STf cases.
by tzok
Sun Sep 23, 2018 4:24 pm
Forum: HxC Floppy Emulator
Topic: Retronic on my Falcon or TT never worked?
Replies: 14
Views: 27682

Re: Retronic on my Falcon or TT never worked?

If you have a GOTEK with either Flash-Floppy or HxC firmware, you should be able to connect it to Atari and use right out of the box. Only remember to connect the floppy cable the right way (on STf/STe it will be "upside-down"). For either firmware, you have to have a FAT32 formatted pendr...
by tzok
Sat Sep 15, 2018 6:59 pm
Forum: Hardware
Topic: STe - Bad DMA Chip
Replies: 166
Views: 32248

Re: STe - Bad DMA Chip

For the ones having a Gigafile/UltraSatan - do you have any resident programs / accessories loaded? I've found some of the CPXs cause a system crash when loading certain games/demos.
by tzok
Sat Sep 15, 2018 3:32 pm
Forum: Hardware
Topic: STe - Bad DMA Chip
Replies: 166
Views: 32248

Re: STe - Bad DMA Chip

I have an STE with a "bad" DMA and a MC68HC000FN16 (it runs @8MHz in the STe) and "We Were @" runs just fine on it. Same on TOS 2.06 ad on TOS 1.62.
by tzok
Fri Sep 14, 2018 10:08 pm
Forum: Applications
Topic: IKBD RTC clock sync
Replies: 2
Views: 1106

Re: IKBD RTC clock sync

I'll answer to myself. ST version of Atari Control Panel does sync the TOS time with IKBD on load, only STe version doesn't do that. Apparently they forgot to fix that in TOS 1.62, as STE_FIX, which is meant solely for 1.06 does that, while TOS 1.62 still doesn't sync the clock without the STE_FIX.
by tzok
Fri Sep 14, 2018 4:15 pm
Forum: News & Announcements
Topic: Survey 2018 for a new batch of CosmosEx and MicroCosmos.
Replies: 29
Views: 9321

Re: Survey 2018 for a new batch of CosmosEx and MicroCosmos.

The FCC rules concern complete devices only (or kits for making a complete device). Any expansion module aka add-on is just sub-assembly. It won't work on its own. The "new" device will be a stock computer with the add-on installed.
by tzok
Wed Sep 05, 2018 9:33 am
Forum: Hardware
Topic: STE boot grey desktop now changing to green - grey
Replies: 6
Views: 817

Re: STE boot grey desktop now changing to green - grey

Your STe is old and the video signal timing is not stable enough for your modern TV. Thus your PAL decoder in TV goes out-of-sync and TV switches to monochrome mode.
by tzok
Mon Sep 03, 2018 2:40 pm
Forum: Applications
Topic: IKBD RTC clock sync
Replies: 2
Views: 1106

IKBD RTC clock sync

TOS 2.06 synchronizes XBIOS clock with IKBD after each reset, so when you set the clock once in Control Panel, it is still set after reboot, until you won't power off the computer. However in TOS 1.xx it doesn't work. Only on STe with TOS 1.06 and 1.62 you may use STE_FIX.PRG in auto folder to do th...
by tzok
Mon Sep 03, 2018 1:33 pm
Forum: Applications
Topic: Y2K date fix for 2017?
Replies: 12
Views: 3743

Re: Y2K date fix for 2017?

I've discovered some interesting facts about the IKBD clock while working on my pass-through IKBD clock replacement. First of all - IKBD uses a proper BCD (de)coding routines, and thus ignores any half-bytes higher than 9. It may be used to set a time only, without altering a date or vice versa - yo...
by tzok
Sun Sep 02, 2018 4:03 pm
Forum: Hardware
Topic: SF314 models
Replies: 4
Views: 601

Re: SF314 models

I have never seen a belt-driven DS floppy... there were 3 types of SF-314, but much more internal disk drive types. The oldest model had a square eject button, like most PC floppies have, the further model had a "slanted" (rhombus) type wide eject button (like in early STf), and the last o...
by tzok
Sat Aug 11, 2018 8:33 pm
Forum: Hardware
Topic: Atari Mega STe 2 floppy drive Gotek + SMD-340
Replies: 8
Views: 937

Re: Atari Mega STe 2 floppy drive Gotek + SMD-340

Twisted cable is meant only for PC FDD, as there are two separate MOTOR_ON (MOTEA and MOTEB) signals and two DRIVE_SELECT (DRVSA and DRVSB). So, with twisted cable, both drives are set as DS1, and the twist changes one to DS0. On Atari or plain Shugart there is only one MOTOR_ON shared by all drives...

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