STE DUALTOS UBE 1.62 & 206 - Not Booting, white screen

Upgrade or replace the ROM.
User avatar
dandoore
Posts: 17
Joined: Sun Mar 17, 2019 4:02 pm

STE DUALTOS UBE 1.62 & 206 - Not Booting, white screen

Post by dandoore »

I have recently got the pre-assembled STE DUALTOS UBE 1.62 & 206 module and ROM from the Exxos Shop for my 1040STe but with it installed I get a white screen the same as if it tries to boot with no ROMS inserted, but working fine with original 1.62 ROMS.

Machine details:
  • MainBoard CA401177
  • 1Mb RAM (4 x 256kB SIMMS)
  • PSU: DVE DSP-508A
Install details (hopefully) as per https://www.exxosforum.co.uk/atari/last/tos/
  • Board installed with flat (un-notched) flush to left hand edge by decoupling caps C113/C114
  • Reset line to pin 23 on the YM chip
  • ROM jumpers set as: W102 (2&3) W103 (2&3) W104 (2&3)
The pins are all making contact from what I can see as I push it into the sockets so have I missed something here or just doing something stupid? :)
Atari 1040^W4160 STe, 800XL (Ultimate 1Mb/SIDE2), 2600, Amiga 1200 Tower (Apollo1260/66Mhz), A1200, CD32, 3 x A500, 2 x A500+ (TF534), Archimedes A310, 16 x Speccies, 2 x BBC Micro, 2 x Sam Coupé, QL, ZX81, Osborne Executive, TI-994/A, Videopac G7000, PS1, PS2 Fat&Slim, Megadrive, NES (RGB), SNES, N64 (RGB), GC, GBC, OG Xbox, Xbox 360, Wii etc. etc. and anything else that has pixels like Lego bricks.
User avatar
exxos
Site Admin
Site Admin
Posts: 23498
Joined: Wed Aug 16, 2017 11:19 pm
Location: UK
Contact:

Re: STE DUALTOS UBE 1.62 & 206 - Not Booting, white screen

Post by exxos »

When you turn on your STE, press the reset button, does it then boot ?
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
User avatar
dandoore
Posts: 17
Joined: Sun Mar 17, 2019 4:02 pm

Re: STE DUALTOS UBE 1.62 & 206 - Not Booting, white screen

Post by dandoore »

Nope, get some vertical lines on screen briefly and then back to white.
Atari 1040^W4160 STe, 800XL (Ultimate 1Mb/SIDE2), 2600, Amiga 1200 Tower (Apollo1260/66Mhz), A1200, CD32, 3 x A500, 2 x A500+ (TF534), Archimedes A310, 16 x Speccies, 2 x BBC Micro, 2 x Sam Coupé, QL, ZX81, Osborne Executive, TI-994/A, Videopac G7000, PS1, PS2 Fat&Slim, Megadrive, NES (RGB), SNES, N64 (RGB), GC, GBC, OG Xbox, Xbox 360, Wii etc. etc. and anything else that has pixels like Lego bricks.
User avatar
exxos
Site Admin
Site Admin
Posts: 23498
Joined: Wed Aug 16, 2017 11:19 pm
Location: UK
Contact:

Re: STE DUALTOS UBE 1.62 & 206 - Not Booting, white screen

Post by exxos »

Sounds more like you have a RAM fault.
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
User avatar
dandoore
Posts: 17
Joined: Sun Mar 17, 2019 4:02 pm

Re: STE DUALTOS UBE 1.62 & 206 - Not Booting, white screen

Post by dandoore »

The lines are only momentary as it resets, plus the machine works fine with original ROMS.

I've just swapped the 1Mb SIMMS for the 4Mb SIMM kit I got from you instead and it's the same (both sets of RAM are tested fine on old ROM too)

I'm going to check continuity on all the ROM pins top to bottom just in case.
Atari 1040^W4160 STe, 800XL (Ultimate 1Mb/SIDE2), 2600, Amiga 1200 Tower (Apollo1260/66Mhz), A1200, CD32, 3 x A500, 2 x A500+ (TF534), Archimedes A310, 16 x Speccies, 2 x BBC Micro, 2 x Sam Coupé, QL, ZX81, Osborne Executive, TI-994/A, Videopac G7000, PS1, PS2 Fat&Slim, Megadrive, NES (RGB), SNES, N64 (RGB), GC, GBC, OG Xbox, Xbox 360, Wii etc. etc. and anything else that has pixels like Lego bricks.
User avatar
dandoore
Posts: 17
Joined: Sun Mar 17, 2019 4:02 pm

Re: STE DUALTOS UBE 1.62 & 206 - Not Booting, white screen

Post by dandoore »

Continuity from bottom of PCB to top of ROM board checks out.
Atari 1040^W4160 STe, 800XL (Ultimate 1Mb/SIDE2), 2600, Amiga 1200 Tower (Apollo1260/66Mhz), A1200, CD32, 3 x A500, 2 x A500+ (TF534), Archimedes A310, 16 x Speccies, 2 x BBC Micro, 2 x Sam Coupé, QL, ZX81, Osborne Executive, TI-994/A, Videopac G7000, PS1, PS2 Fat&Slim, Megadrive, NES (RGB), SNES, N64 (RGB), GC, GBC, OG Xbox, Xbox 360, Wii etc. etc. and anything else that has pixels like Lego bricks.
User avatar
rubber_jonnie
Site Admin
Site Admin
Posts: 10472
Joined: Thu Aug 17, 2017 7:40 pm
Location: Essex
Contact:

Re: STE DUALTOS UBE 1.62 & 206 - Not Booting, white screen

Post by rubber_jonnie »

Can I suggest you disable the UBE switcher element and see if it works normally?

In other words disconnect the line to the YM, and desolder the jumper (TS) that enables the UBE Switch.

By doing this you will have just a standard DualTOS adapter. You can then either leave the TOS select jumper open or closed and see if it boots ok.

If it works then you can then take another look at the UBE Switch side of things.
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
User avatar
dandoore
Posts: 17
Joined: Sun Mar 17, 2019 4:02 pm

Re: STE DUALTOS UBE 1.62 & 206 - Not Booting, white screen

Post by dandoore »

rubber_jonnie wrote: Sun Dec 08, 2019 3:40 pm Can I suggest you disable the UBE switcher element and see if it works normally?
Removed reset connection and cleared bridge for UBE and no change :(
Atari 1040^W4160 STe, 800XL (Ultimate 1Mb/SIDE2), 2600, Amiga 1200 Tower (Apollo1260/66Mhz), A1200, CD32, 3 x A500, 2 x A500+ (TF534), Archimedes A310, 16 x Speccies, 2 x BBC Micro, 2 x Sam Coupé, QL, ZX81, Osborne Executive, TI-994/A, Videopac G7000, PS1, PS2 Fat&Slim, Megadrive, NES (RGB), SNES, N64 (RGB), GC, GBC, OG Xbox, Xbox 360, Wii etc. etc. and anything else that has pixels like Lego bricks.
User avatar
rubber_jonnie
Site Admin
Site Admin
Posts: 10472
Joined: Thu Aug 17, 2017 7:40 pm
Location: Essex
Contact:

Re: STE DUALTOS UBE 1.62 & 206 - Not Booting, white screen

Post by rubber_jonnie »

Just to double check, is the ROM correctly oriented to pin 1 of the socket?
Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
User avatar
dandoore
Posts: 17
Joined: Sun Mar 17, 2019 4:02 pm

Re: STE DUALTOS UBE 1.62 & 206 - Not Booting, white screen

Post by dandoore »

Yup, Pin 1 arrow in socket matches to Pin 1 dimple on top, as does the chamfered corner :)

Incidentally, if this was one of my chips and given the behaviour of the machine with the switcher chip in matches that of having no chips in at all I'd normally be looking to see if I'd actually programmed the bugger in the first place but my MiniPro doesn't list the AT27C4096 PLCC version as a supported chip so I won't be able to read it and check it.
Atari 1040^W4160 STe, 800XL (Ultimate 1Mb/SIDE2), 2600, Amiga 1200 Tower (Apollo1260/66Mhz), A1200, CD32, 3 x A500, 2 x A500+ (TF534), Archimedes A310, 16 x Speccies, 2 x BBC Micro, 2 x Sam Coupé, QL, ZX81, Osborne Executive, TI-994/A, Videopac G7000, PS1, PS2 Fat&Slim, Megadrive, NES (RGB), SNES, N64 (RGB), GC, GBC, OG Xbox, Xbox 360, Wii etc. etc. and anything else that has pixels like Lego bricks.
Post Reply

Return to “ROM UPGRADES”