Need Transistor?

[NuClear235]

Hello,
Do I need transistor circuit, when I will use standard Atari Joystick with Button2 wired to pin9 of connector, please?
What function Transitor has? I dont want to use Sega controller anyway…
Thank You

[tebl]

The C64 secondary button needs to be active high as it is connected to the SiD chips analog input. The transistor as well as R5-R7 forms an inverter for devices designed with an active low signal for this button (the most common of these is the SMS gamepad). When used with a C64GS controller that has already been wired correctly, you can wire the circuit as expected by leaving out transistor as well as R5-R7 - install wire links for R6 and R7. Do however check the wiring on your joystick before doing so, the SID chip don't like being shorted. ons. 2. jun. 2021, 22:31 skrev NuClear235 ***@***.***>:

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Hello, Do I need transistor circuit, when I will use standard Atari Joystick with Button2 wired to pin9 of connector, please? What function Transitor has? I dont want to use Sega controller anyway… Thank You — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#2>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AGEF6IKEEQER65DIKQ2H4LDTQ2IKDANCNFSM457NP6LA> .

[NuClear235]

Thank for answer.
I am using my own adapter, where is Button2 of Joy2 connected to Button1 of Joy1. So can have Fire2 button in games where is Button2 not supported, but is for action used SPACEBAR key.
Commando game throws grenades by SPACEBAR key. So I am using Button2 for it. This is working only with selected joystick2 as main!
I will try improve Your adapter to this function.
Best will be on B2SEL one more jumper possition /SPACEBAR/. Where will be signal connected to pin13.
Now I will just replace B2sel pin4 to harwired on fire13. I am just not sure what will do when will select main joystick 1 and press fire2 button with selected autofire. Will not be problem with grounding autofire out ?

[tebl]

I'm not sure that this change can be done easily with the current design, the secondary fire button in this case would need to go to the fire button on the otherwise inactive port. It could be solved easily by replacing the components with something like a PIC, GAL or MCU though I kept it as a mostly basic design as a challenge. Maybe dropping autofire for another 4053 is an option, but I may be overlooking something. One thing that does come to mind is perhaps what you're thinking - that spacebar is always on port 1 so perhaps wiring it directly a across would do the trick as well. fre. 4. jun. 2021, 09:21 skrev NuClear235 ***@***.***>:

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Thank for answer. I am using my own adapter, where is Button2 of Joy2 connected to Button1 of Joy1. So can have Fire2 button in games where is Button2 not supported, but is for action used SPACEBAR key. Commando game throws grenades by SPACEBAR key. So I am using Button2 for it. This is working only with selected joystick2 as main! I will try improve Your adapter to this function. Best will be on B2SEL one more jumper possition /SPACEBAR/. Where will be signal connected to pin13. Now I will just replace B2sel pin4 to harwired on fire13. I am just not sure what will do when will select main joystick 1 and press fire2 button with selected autofire. Will not be problem with grounding autofire out ? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#2 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AGEF6IMJKZDY6XKUUFX4HDDTRB5IZANCNFSM457NP6LA> .

[NuClear235]

Hello, Thank You for tips! What do You mean on this message (see pic)? What are jumpers B/C ? Arent You on facebook or WhatsUp for just quick mesaging ? Thank You Michal Polak From: tebl ***@***.*** Sent: Saturday, June 5, 2021 12:53 AM To: tebl/C64-Joystick-Switcher Cc: NuClear235; Author Subject: Re: [tebl/C64-Joystick-Switcher] Need Transistor? (#2) I'm not sure that this change can be done easily with the current design, the secondary fire button in this case would need to go to the fire button on the otherwise inactive port. It could be solved easily by replacing the components with something like a PIC, GAL or MCU though I kept it as a mostly basic design as a challenge. Maybe dropping autofire for another 4053 is an option, but I may be overlooking something. One thing that does come to mind is perhaps what you're thinking - that spacebar is always on port 1 so perhaps wiring it directly a across would do the trick as well. fre. 4. jun. 2021, 09:21 skrev NuClear235 ***@***.***>:

Thank for answer. I am using my own adapter, where is Button2 of Joy2 connected to Button1 of Joy1. So can have Fire2 button in games where is Button2 not supported, but is for action used SPACEBAR key. Commando game throws grenades by SPACEBAR key. So I am using Button2 for it. This is working only with selected joystick2 as main! I will try improve Your adapter to this function. Best will be on B2SEL one more jumper possition /SPACEBAR/. Where will be signal connected to pin13. Now I will just replace B2sel pin4 to harwired on fire13. I am just not sure what will do when will select main joystick 1 and press fire2 button with selected autofire. Will not be problem with grounding autofire out ? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#2 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AGEF6IMJKZDY6XKUUFX4HDDTRB5IZANCNFSM457NP6LA> .

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#2 (comment)> , or unsubscribe <https://github.com/notifications/unsubscribe-auth/AEVOYN5GCEGGCDKBMHE6BXDTRFKM3ANCNFSM457NP6LA> . <https://github.com/notifications/beacon/AEVOYN4MTBLHXJ3UU2Q6IT3TRFKM3A5CNFSM457NP6LKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOGL3W7IY.gif>

[tebl]

Jumpers B/C refer to the two 2x3 pin headers on the board, it is leftover reference to an older similar project (uses Mega Drive/Genesis gamepads instead). The are called B1_SEL and B2_SEL here, mainly allowing the function of buttons to be swapped or have one work as up direction. I rarely use the social platforms, for project discussion i prefer them on github as the content may be of interest to other builders. man. 7. jun. 2021, 07:54 skrev NuClear235 ***@***.***>:

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Hello, Thank You for tips! What do You mean on this message (see pic)? What are jumpers B/C ? Arent You on facebook or WhatsUp for just quick mesaging ? Thank You Michal Polak

[NuClear235]

OK. What could do, when I connecter Fire Button to UP without remove Jumper 1 ? Isnt classic joystick just pasive switching signals to GND? Michal From: tebl ***@***.*** Sent: Monday, June 7, 2021 12:43 PM To: tebl/C64-Joystick-Switcher Cc: NuClear235; Author Subject: Re: [tebl/C64-Joystick-Switcher] Need Transistor? (#2) Jumpers B/C refer to the two 2x3 pin headers on the board, it is leftover reference to an older similar project (uses Mega Drive/Genesis gamepads instead). The are called B1_SEL and B2_SEL here, mainly allowing the function of buttons to be swapped or have one work as up direction. I rarely use the social platforms, for project discussion i prefer them on github as the content may be of interest to other builders. man. 7. jun. 2021, 07:54 skrev NuClear235 ***@***.***>:

Hello, Thank You for tips! What do You mean on this message (see pic)? What are jumpers B/C ? Arent You on facebook or WhatsUp for just quick mesaging ? Thank You Michal Polak

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#2 (comment)> , or unsubscribe <https://github.com/notifications/unsubscribe-auth/AEVOYNYI3X4DUUWOA6DCMPTTRSPCPANCNFSM457NP6LA> . <https://github.com/notifications/beacon/AEVOYN5Z7ST4YV2K7OS47S3TRSPCPA5CNFSM457NP6LKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOGMBL6AY.gif>