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Author Topic: WiFi modem for all Amigas?  (Read 11279 times)

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Offline psxphill

Re: WiFi modem for all Amigas?
« on: July 12, 2016, 09:10:41 AM »
Quote from: JimDrew;810975
I think the PET user port is not the same as the VIC-20 and C64/128's user ports.

The VIC-20 and C64/128 user ports aren't the same. There are differences in the 1-12 pins, only A-N are the same. As long as you avoid the differences then it's possible to create a device that is compatible with both.

The PET user port is also the same on the A-N pins, so it's certainly possible to make a device compatible across all three. Except you don't have any 5v/9v power, so you would need to cut those traces on the adapter and grab power from somewhere else.

http://www.hardwarebook.info/Commodore_PET_Parallel_User_Port
http://www.hardwarebook.info/VIC-20_User_I/O
http://www.hardwarebook.info/C64/128_User_Port

The plus 4 is entirely different, as A-N are no longer connected to a CIA/VIA. However they are connected to the 6551 UART, so RS232 (and only RS232) devices should be able to work across all four. The power pins are there too, so no cutting traces. However you will need to make sure that you are using the correct polarity for all the pins, as you can't do cheap hacks on the plus 4 by violating the RS232 spec.

http://www.hardwarebook.info/Plus4_User_Port
« Last Edit: July 12, 2016, 10:06:11 AM by psxphill »
 

Offline psxphill

Re: WiFi modem for all Amigas?
« Reply #1 on: December 03, 2017, 08:04:18 AM »
Quote from: Oldsmobile_Mike;831785
I used to browse with an A1200 with just some extra ram. But I suppose I was a glutton for punishment. :lol:


Me too, the extra ram was a 512k pcmcia 16 bit ram card that was left over from a project at work.

Although I mostly used an a500 with a 28mhz 68000 and a trifecta scsi hard drive.