Search found 692 matches

by ralcool
Wed Apr 07, 2010 5:14 pm
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

More testing has shown. SuperTOS2.06 will display 2028 IF; 1. Loaded via RAMTOS7 in the autofolder. After normal relocation and reboot. (NO GDOS required!) 2. If loaded via SelTOS, after its reboot it will be 1991 normal date. (If during this reboot you load GDOS, it will be 2028 again.) Very strang...
by ralcool
Wed Apr 07, 2010 3:53 pm
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

I've noticed- If I run GDOS 1.1, (or NVDI) on top of normal TOS 2.06 UK- with NO clock cartridge fitted. The default system date is 00-00-2028 (not ROM mfg date) It doesn't happen on 1.4. It also happens if I load SuperTOS 2.06. (This time without GDOS loaded!) Maybe the Germans fixed it too..... or...
by ralcool
Wed Apr 07, 2010 2:26 pm
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

Anyone know where to find Magic Sac- Mac emulator software ... I got a hold of some Mac512k roms, and I think they could work if plugged into the cart pcb. (being 64k) I can't BUY a magic sac or spectre cart & software, and am just curious to try.... System 4 should work on 512k roms.... Can't f...
by ralcool
Wed Apr 07, 2010 6:20 am
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

MIGHT have found WHAT has damaged the shifter mounted RAM. There was never a 33ohm resister fitted to A9. I always thought the installer put one under the motherboard from the MMU. And I never noticed or looked. My Bad. Amazing it worked so well for so long. After putting a resister in- I still get ...
by ralcool
Tue Apr 06, 2010 3:32 pm
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

Well, A long night. Can't be bothered today to repair the ram, So I modified the IDE IF pcb overlay/mask with a few beers. Kym sent me the original pdf for the Popsel IDE IF. I found the popsel flashable TOS page and pdf too. (Also lacking information to link them together) And the circuit has some ...
by ralcool
Sun Apr 04, 2010 2:00 pm
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

Bank 0 again. The shifter mounted ram. Learned by compared faulty addresses with link provided by ppera http://www.embeddedlinks.com/chipdir/oth/atari.txt, from http://www.atari-forum.com/viewtopic.php?f=74&t=13939 'Quote' Ramadresse 512KB 1MB 2MB 4MB 000000-7ffff bank 0 bank 0 bank 0 bank 0 800...
by ralcool
Sun Apr 04, 2010 4:11 am
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

Good job Shredder11! So, Out of interest (boredom) - I decided to burn the ST v4.4 diag roms, and install them into the SuperMon cartridge PCB. The first set of roms mysteriously didn't work- error E9 Cannot fetch instruction... The second reburn did. I thought the Dallas clock chip in the cart was ...
by ralcool
Sat Apr 03, 2010 12:02 pm
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

http://www.hobby-electronique.com/index.php?option=com_content&view=article&id=15&Itemid=27 It appears the french website for the diagnostic cartridge is STILL available.. At a slightly new address. Links at the bottom for st/ste/tt/ mega rom images and a cct board design to etch/build. ...
by ralcool
Wed Mar 31, 2010 3:53 pm
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

Thanks Mr Wongck..... I'll check it out.
by ralcool
Wed Mar 31, 2010 2:34 pm
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

I found online the very same SuperMon cartridge I use on my ST! I tried a cart dump with the Steem utility, and appears identical running in Steem as my STs.

I can't seem to attach the *.stc version.
by ralcool
Wed Mar 31, 2010 11:05 am
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

I can't seem to find a forum for him. His web site only has his usual mods and pages. Although he does have a email support link. I've been running memtest repeatedly on 4Mb and only get an 1 random read/write error per 5-6 test reruns. (at nearly 10mins per run). This is pretty good, but not entire...
by ralcool
Tue Mar 30, 2010 3:24 pm
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

Just a random last resort test-frustrated/boredom........ SelTos loaded TOS1.4 IDE appears stable if my RAM is switched to 1Mb mode. (A9 disabled) Maybe my memory chips have a new error. Time to load memtest-german again. This is wierd. Nothing crashed like this until now. Even the T_Board is workin...
by ralcool
Tue Mar 30, 2010 3:18 pm
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

I will attempt to display the results of patching TOS 1.4 (UK) in the location specified using my debug cartridge. This glitch appears when using SELTOS to load the modified image or when burn to actual roms. Normal boot- but unstable. Random lockups or 4 Bombs. (If the cartridge is fitted it will u...
by ralcool
Sun Mar 28, 2010 4:30 pm
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

Circuit board etching delay due to printer ink not liking clear 'overhead projector paper' I use for making negative mask for PCBs.... need fresh OEM ink anyway... Having trouble with the TOS patching actually. I had done the patching, and tested IDE patched TOS 1.4 under Steem. Everything seemed ok...
by ralcool
Sun Mar 28, 2010 5:34 am
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

Years ago I found what you MIGHT call an easter egg in TOS 1.4... I attemped to find it again... At address FD0270.. when viewed as ASCII, is "Dave StaUgas loves Bea Hablig" using my debug cartridge viewing TOS. !! Or when viewed in HxD on a once piece TOS 1.4 [GB] rom image, its at offset...
by ralcool
Sat Mar 27, 2010 3:30 pm
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

The new 64pin sockets arrived the other day (thanks ebay-machined 64pin goodness)... So I got to test the T_Board64 again. Now using the Atari DMA chip (Not the f'in IMP branded crap)- the disc/file corruption problem is solved....yay, after so many years of previous frustration...! (and no availabl...
by ralcool
Sat Mar 27, 2010 7:28 am
Forum: Hardware
Topic: How to upgrade OLD 520STm from 512K - hard to find info
Replies: 23
Views: 6431

Re: How to upgrade OLD 520STm from 512K - hard to find info

I upgraded a 520 STFM once using the 16pin x 16 chips in the vacant holes. (Using -120ns ram from an old video card)

262 solder joints later (+ 3 resisters for CAS/RAS) I had a working 1040ST!

Basically easy.
by ralcool
Sat Mar 27, 2010 7:21 am
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

Well, Managed to unlock and partition an old xbox 10gb hdd...not exactly easy, but successful. (actually two) using (www.)HDAT2(.com) utility. Have 31Mb (FAT16/16k cluster) + 998mb, and remainder several 2gb partitions setup, with a smaller 760~mb for final remaining space. FAT16/32k Clusters. HDtun...
by ralcool
Wed Mar 24, 2010 8:51 am
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

Several hours on the ExpressPCB, I've come up with a ROM mounted TOS/IDE board. As mentioned, sits on Lo0/Hi2 sockets- just need to relocate 4700uf cap slightly. Just Add 16/19 more wires (!) to the MB, and it should work. (No worse than installing a PS2 modchip!) http://i821.photobucket.com/albums/...
by ralcool
Tue Mar 23, 2010 9:50 am
Forum: Hardware
Topic: Satan / Ultra Satan Disk Alternatives...
Replies: 209
Views: 37131

Re: Satan / Ultra Satan Disk Alternatives...

I'd buy it... Seems the spiflash.org site is still 'nder construction'.

Well DrCoolZic.....CF in IDE mode....
by ralcool
Tue Mar 23, 2010 3:33 am
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

Minor brainwave last night.. If clever ppera can create an IDE IF on the cartridge port... using only A1-A15..and the full D0-D15 lines... then and adapter could be made internally on the 1040ST on the rom sockets. The lines run right up to the cpu...this (aparently discontinued project) is not poss...
by ralcool
Mon Mar 22, 2010 3:01 pm
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

Found some answers. UDS/LDS for TOS roms (OE) as mentioned by 1024Mak- would be largely not required- but seemingly because rom calls appear to always be 16bit in nature using just CE via ROM0/1/2- and both hi/lo chips feed in unison. So using those lines COULD have been for very early TOS calls of ...
by ralcool
Fri Mar 19, 2010 3:51 pm
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

MIGHT have found an answer to the different uses of OE. http://www.armory.com/~rstevew/Public/Pgmrs/EPROM/How_EPROMs_Work.htm + reading ROM Datasheets. When using roms, CE is generally used to 'wake up' the chip and supply data. A delay occurs since basically the whole chip is 'sleeping' ala, a low ...
by ralcool
Thu Mar 18, 2010 12:13 pm
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

What I really can't work out. I've been pouring over the ST diagrams working the connections of the A16/17/CE jumpers. Easy enough. Just need to remember/learn A0 (rom) =A1 (cpu)- why does Atari think zero isn't a number?! Jumper A17 swaps OE 'ground' with an address (real A16). A16 swaps VPP (5v) f...
by ralcool
Thu Mar 18, 2010 4:19 am
Forum: Hardware
Topic: Modified ST hassles
Replies: 884
Views: 132357

Re: Modified ST hassles

Now that this DIY IDE site is down- did anyone mirror the contents? Ppero?

http://www.infofront.de/andreas/index.htm

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