TOS, Roms and ROM Fixes...any GUIDE?

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JOeAim
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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby JOeAim » Thu Jun 27, 2013 10:45 pm

qq1975b wrote:
NikiforosST wrote:Ready at last! working perfectly!
Original SHARP chips with TOS 1.02 (28 pins)

New eprom Chips with TOS 1.04 (32pins)



I have tried to do it for my Mega 4 but I only achieve a white screen with slightly yellow borders.

I have done the following:

TOS 1.04SP burnt in 2 27C010 EPROMS. The original TOS .IMG file had been splitted in two files (HI and LO) using Hatari and Ppera ROMSPLIT.
Because it will be in a Mega ST and there is lot of free space I have used two 32 PIN socket per chip. So the images are here:

Mega 4 orignal roms (1.04 German)
IMG_1029.JPG


Sockets modded:

IMG_1031.JPG


IMG_1032.JPG


But it doesn't work....What I have done wrong???


Hi

This is wrong. Use the 27C010 and engage follows. https://docs.google.com/file/d/0B16K0oc ... sp=sharing

Image
Last edited by JOeAim on Fri Jul 12, 2013 7:08 pm, edited 1 time in total.

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby BlankVector » Mon Sep 30, 2013 11:44 am

See there how to flash EmuTOS (or other ROM) to STe:
http://www.youtube.com/watch?v=G4st-x4-BJg

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby 0xHF » Tue Nov 18, 2014 9:16 pm

I want to upgrade my 1.00 TOS to 1.04 TOS using 27C256 chips. I found the chips on ebay but with 100 speed. Will these work?

http://www.ebay.com/itm/290457283413?_trksid=p2060778.m1438.l2648&ssPageName=STRK%3AMEBIDX%3AIT.

Found the programmer http://www.ebay.nl/itm/MiniPro-USB-TL86 ... 3a9b906325

Now just the chips!


Thank you :- )
Last edited by 0xHF on Wed Nov 19, 2014 7:19 am, edited 1 time in total.

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby qq1975b » Wed Nov 19, 2014 9:11 am

Yes, they'll work. 6 chip TOS ROM, right?
Trying to learn...

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby 0xHF » Wed Nov 19, 2014 11:45 am

Hi,

yes I have a 6 ROM TOS 1.00 at the moment 28 pin.

I'll order the 27c256 ns 100 then.

Do I have to do any hardware modification or is this upgrade just plug and play?

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby qq1975b » Wed Nov 19, 2014 12:38 pm

Plug and play.
Trying to learn...

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby crashman » Mon Dec 29, 2014 1:18 am

I've just found it...
So late at night you miss things...

Have you seen the 520ST+ video that needs, demands a Tos disk to boot?
http://youtu.be/m1jscTrkeso
Do you know if this TOS bootloader roms are dumped?
I've only had found the disk image.
260ST, 520ST, 520ST+, 520STFM, 1040STE, 4160STE, STACY 2, MEGA ST, MEGA ST2, MEGA ST4, MEGA STE, TT030, FALCON030, FALCON030 with Centurbo 2rB, Firebee
SH204, Megafile 30, Megafile 60, Megafile 44
SM124, SM146, SC1224, SC1435
Satandisk, Ultrasatan, HxC SD, Hxc SD Slim, NetUSBee, CosmosEX, Unicorn, Gotek HxC
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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby 0xHF » Wed Jan 07, 2015 12:39 am

Woop Woop! :D

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qq1975b
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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby qq1975b » Wed Jan 07, 2015 8:10 am

:thumbs:
Trying to learn...

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby Arne » Wed Jan 07, 2015 8:24 am

crashman wrote:Do you know if this TOS bootloader roms are dumped?

My 260 was equipped with a pair of these. Still have them. They are 16k x8 IIRC.
With only 512KB RAM, 200KB gone by TOS, 32KB gone by screen memory and Atari BASIC loaded it left me with less memory than my C64!

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby qq1975b » Sun Jan 11, 2015 9:35 pm

Does anybody know the recommended eprom/eeprom's speed forTT, and Mega STe?

An Atari ST/e only needs a 120ns speed ROM to optimize rom access. Does the Mega STe need 60-70 ns speed roms (16mhz speed)? What about Falcon and TT (32mhz...)?
Trying to learn...

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby Arne » Tue Jan 13, 2015 6:55 am

I'd recommend:
ST/STE/MSTE <= 200ns
TT/F030 <= 150ns
You can change the number of waitstates on F030 with those solder bridges near the internal expansion port.

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby crashman » Thu Jan 15, 2015 9:22 pm

I try to recreate the original boot loader for the TOS on Disk, this can be the eproms need?

http://www.ebay.es/itm/10pcs-M27128A2F1 ... 259994d090



Thanks.
260ST, 520ST, 520ST+, 520STFM, 1040STE, 4160STE, STACY 2, MEGA ST, MEGA ST2, MEGA ST4, MEGA STE, TT030, FALCON030, FALCON030 with Centurbo 2rB, Firebee
SH204, Megafile 30, Megafile 60, Megafile 44
SM124, SM146, SC1224, SC1435
Satandisk, Ultrasatan, HxC SD, Hxc SD Slim, NetUSBee, CosmosEX, Unicorn, Gotek HxC
2600VCS, LYNX, LYNX II, JAGUAR

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby crashman » Mon Feb 02, 2015 8:57 pm

I finally tried those AT29C256-90PC and everything worked flawlessly!

http://t.co/TouoQhq9ib
260ST, 520ST, 520ST+, 520STFM, 1040STE, 4160STE, STACY 2, MEGA ST, MEGA ST2, MEGA ST4, MEGA STE, TT030, FALCON030, FALCON030 with Centurbo 2rB, Firebee
SH204, Megafile 30, Megafile 60, Megafile 44
SM124, SM146, SC1224, SC1435
Satandisk, Ultrasatan, HxC SD, Hxc SD Slim, NetUSBee, CosmosEX, Unicorn, Gotek HxC
2600VCS, LYNX, LYNX II, JAGUAR

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby BlankVector » Mon Feb 02, 2015 9:05 pm

Hehe, nice hack :)
You can even boot emutos-floppy with that ROM.

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mfro
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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby mfro » Mon Feb 02, 2015 9:19 pm

Great.

I remember my first ST (a 520ST+) had this ROMs when it appeared in Germany. They were changed by my Atari dealer at no extra cost after several months when the final TOS 1.02 appeared.

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby telmnstr » Wed Jun 24, 2015 4:05 am

Hello everyone, I tried to follow this info and hit a snag.

System is an Atari Mega ST2. Originally had two PROMs.

I bought an UltraSatan and header adapter, and some 27C010 EPROMs. Goal was to upgrade to 2.06 and mount the Ultrasatan on the bottom of the metal shield accessible through the back expansion slot.

I took the 2.06 image and split it using my Eprom programmer's software (It's a Needham unit.) I programmed the hi and lo eproms. I soldered the wires as per https://docs.google.com/file/d/0B16K0oc ... edit?pli=1 .

For the pin 45 jumper I ran it to the W2 jumper. I left W3 the way it was, and W4 is not populated. These are the settings for the rom size.

First run nothing happened. Then I switched the hi and lo eproms. Then it seems to come up like a normal Atari doing the disk seek, but then throws 8 bombs.

Am I missing anything? At first I thought maybe 2.06 doesn't work on the Mega ST2, only STE but found better info.

One thing that might be helpful is a copy of the actual, split, known working 2.06 images for a US Mega ST2? I saw that filling the EPROMs with FF's will break checksum -- but would that cause my error?

Any help is appreciated!

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby qq1975b » Wed Jun 24, 2015 9:53 am

All my Mega ST with TOS 2.06 have a little PCB over the CPU besides the EPROMs hack... I will take a picture later if I can.
Trying to learn...

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby telmnstr » Thu Jun 25, 2015 5:37 am

qq1975b wrote:All my Mega ST with TOS 2.06 have a little PCB over the CPU besides the EPROMs hack... I will take a picture later if I can.


Someone replied to me on another forum that the Mega ST2 series does indeed need the decoder logic to use the 2.06 firmware. I had run across descriptions of this in reference to the 520/1040 but not the ST2.

Tonight I tried to burn a pair of 1.04 eproms and mounted them all up, but it just white screens and reboots. I'm going to do some research to make sure the programmer isn't writing 0xFF to the remainder of the space on the chip.

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby qq1975b » Thu Jun 25, 2015 10:12 am

You have to mod the 2x27C010 to make it work. Only 6x27C256 combination work plug and play.
Trying to learn...

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby telmnstr » Thu Jun 25, 2015 10:33 pm

I did. But I did a bit more research this morning and found that the instructions I used were only part of it. I had pins 1 tied to 32 31 and 30 on each 27C010, which basically feeds 5VDC from socket pin 28 into those pins. I had pin 2 (Address line 16) tied to jumper W2 which is the same as socket pin 22. But I didn't have pin 24 on eprom (output enable) pulled up and tied to GND. So I did this when I got home.

The result is the machine now boots with 4 bombs, then resets into 6 bombs. Progress I guess?

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby soviet9922 » Wed Apr 13, 2016 5:52 pm

found very interesting to use eeproms in place off eproms if someone know any eeprom compatible to 27C801 or 27C4000/27C8000.

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby Hazzardus » Wed Jun 21, 2017 11:16 am

This may not be relevant, but I would like to acquire TOS 1.02, 1.06 and 2.06 from my current machines. I have a UK 1040STFM (stock), a UK 1040STE (upgraded to 4MB) and a UK 4MB Mega STE (stock). I already have these TOS images downloaded from somewhere, but would like to get the TOS images I own backed up just so I can say I've done it. Is there a decent guide to doing this? I have access from PC to the Mega STE hdd and can create floppy disks from there. I don't have a PC floppy drive though, so something I could put on the Mega STE then write to floppy for the other ST's would be helpful.

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Re: TOS, Roms and ROM Fixes...any GUIDE?

Postby sjuktstarkgrogg » Wed Jul 26, 2017 2:41 pm

Very interesting thread! I also just recently started to poke around and learn about the STs myself. I'm like you, doing a lot of searching online to find my answers which are somewhat scattered around and some sources showcase solutions to your problem, but since a lot of them are old you wonder if there's a more recent and complete guide/method/solution available. I'm an Atari-rookie and entering the world of Atari in 2017, in this forum for example, you're surrounded by Atari veterans that have all that valuable information in their brains. So I find it very good that you're taking this upon yourself to compile a rather easy-to-follow guide, for people like myself, with the expertise provided by the wise veterans ;). TOS in itself also seems like its' own science, but luckily experienced atarians are sharing their knowledge. Fortunately the Atati community is one of the most helpful I've ever stumbled upon. I'm gonna follow this thread, cause I'm also curious on how I can infuse my two STe:s with a tailored OS that get the most of the machine as well as meeting my needs as a musician/graphist looking forward to incorporate the ST as one of my creative tools!


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