Reset buttons and floppy drives
Posted: Thu Jul 28, 2005 8:17 pm
I just discovered something really odd when testing my prototype cartridge on my real VIC - something I would never have found in an emulator
When a floppy drive is connected to the VIC and turned on...the reset button on the cartridge doesn't work. Turn off the drive, or disconnect the serial cable, and the reset button works again.
Plus, the reset button on the cartridge resets the drive if the VIC is powered off
That doesn't make any sense to me, any ideas?
I have a 100 ohm resistor in series with the reset button as per Ray Carlsen's suggestion, for safety...could that be causing a problem? Too much load for the reset line to get pulled to ground maybe? Though this works on a C64, and I didn't think the serial and computer reset lines were connected.
![Wink :wink:](./images/smilies/icon_wink.gif)
When a floppy drive is connected to the VIC and turned on...the reset button on the cartridge doesn't work. Turn off the drive, or disconnect the serial cable, and the reset button works again.
Plus, the reset button on the cartridge resets the drive if the VIC is powered off
![Confused :?](./images/smilies/icon_confused.gif)
![Shocked :shock:](./images/smilies/icon_eek.gif)
I have a 100 ohm resistor in series with the reset button as per Ray Carlsen's suggestion, for safety...could that be causing a problem? Too much load for the reset line to get pulled to ground maybe? Though this works on a C64, and I didn't think the serial and computer reset lines were connected.