Hello!
Im wondering how you enable the MONO resolution on a H4 ? I have seen the jumper and tried switching them but when i do the screen is all black.
/zChris
Enable Mono on H4
Re: Enable Mono on H4
Firstly does your monitor support high resolution ?
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viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
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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.
Re: Enable Mono on H4
Yeah, at least other ataris have worked on it in mono mode with ube switch.
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Re: Enable Mono on H4
Have you tried the UBESwitch with the H4?
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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...
Re: Enable Mono on H4
I think I known what the problem is..
https://www.exxosforum.co.uk/forum/viewt ... =50#p30655
The jumper on the H4 only enables the MUX to output mono, it doesn't switch the video to mono. If you plugged in a mono monitor then that would switch the video to mono. Currently you are telling the MUX to use mono, but the shifter is still outputting colour, so you get a black screen.
On later boards it was fixed that plugging in a mono monitor would automatically switch the MUX as well. But on the H4 you have to switch the MUX AND switch mono on pin, on the monitor port to switch the video to mono mode.
There was a proposed fix using an inverter but nobody came forward to test the idea out.
https://www.exxosforum.co.uk/forum/viewt ... =50#p30655
The jumper on the H4 only enables the MUX to output mono, it doesn't switch the video to mono. If you plugged in a mono monitor then that would switch the video to mono. Currently you are telling the MUX to use mono, but the shifter is still outputting colour, so you get a black screen.
On later boards it was fixed that plugging in a mono monitor would automatically switch the MUX as well. But on the H4 you have to switch the MUX AND switch mono on pin, on the monitor port to switch the video to mono mode.
There was a proposed fix using an inverter but nobody came forward to test the idea out.
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.
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.
Re: Enable Mono on H4
What exactly does the mono monitor do in order for it to switch over to mono? Ground the Mono pin?
/zChris
/zChris
Re: Enable Mono on H4
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.
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.
Re: Enable Mono on H4
So when i have the jumper on MONO and ground the MONO pin i should get into mono?
Re: Enable Mono on H4
Yes.
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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.
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.
Re: Enable Mono on H4
Alright. Is getting MONO the same as high res? Maybe i have mixed that up. Anyway when i ground the mono pin and jumper the MUX i get a blank screen. Is there something else thats needs to be done in order to get MONO / high res ? Atm there is a VGA connector soldered on.