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Forum Index : Microcontroller and PC projects : Come in and find out
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Mixtel90 Guru  Joined: 05/10/2019 Location: United KingdomPosts: 7515 |
Nope, I've not done a v2.0 yet. Things have been very busy on the domestic front for some time now - and I still have the bathroom walls to finish off and the floor to sort out! Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 4251 |
This even tells us what the hardware issue probably is, if these are being read when the test program is configured to read ports A & B as Atari joysticks and no Atari joysticks are connected then pins GP14, GP15 and GP28 are all shorted to ground. Best wishes, Tom MMBasic for Linux, Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 4251 |
Mick, Looking at the 2.0 schematic, where is the pull-up resistor on GP28 when attaching an Atari joystick to port B ? Best wishes, Tom Edited 2022-11-10 07:35 by thwill MMBasic for Linux, Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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Turbo46 Guru Joined: 24/12/2017 Location: AustraliaPosts: 1636 |
 Looks like it depends on LB1 whether it's pullup or down. Bill Keep safe. Live long and prosper. |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 7515 |
That's correct, Bill. Set it to UP and it will pull GP28 up. With link LB3 closed pin 1 is also pulled up, so it becomes the Atari joystick UP pin. In theory anyway... :) Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 4251 |
Ah, I was only looking at the GP28 on the DB9 connector part of the schematic. Anyway that probably answers why Martin is getting the unexpected Atari UP on port B, the jumpers are set wrong. That just leaves both ports unexpectedly reporting Atari A/FIRE. Martin, I'm wondering if you've systematically installed the wrong resistors or capacitors connected to both GP14 & GP15 (pin 6 on the DB9s). These are also the 3V3 supply pins when using NES controllers so that would explain why they aren't working either. Best wishes, Tom Edited 2022-11-10 09:07 by thwill MMBasic for Linux, Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| Turbo46 Guru Joined: 24/12/2017 Location: AustraliaPosts: 1636 |
The CMM2 version worked for me with the joystick and the keyboard. The Nuncuk didn't though, then I realized that it's not yet supported.  My brain kept expecting the green dot to go left when I operated the 'left' control instead it was just changing the direction that it was facing. Maybe something on the green dot could indicate which direction it was pointing might help? Bill Keep safe. Live long and prosper. |
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Martin H. Guru Joined: 04/06/2022 Location: GermanyPosts: 1193 |
Thank you for your Help Mick, Bill and Tom very Helpfull. This limits the area for troubleshooting. I'll have a look at this later, since I am currently in the office. Thanks Mart!n 'no comment |
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| Martin H. Guru Joined: 04/06/2022 Location: GermanyPosts: 1193 |
so, NES @ B Atari @ A both ok... I missed 2 150R Resistors under the Pico, so it wasn't obvious  Thank you all for your Support.  Edited 2022-11-12 00:54 by Martin H. 'no comment |
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