Search found 24 matches
- Fri Jul 08, 2022 3:14 pm
- Forum:
- Topic: PS/2 Keyboard Working with ATTINY and I2C
- Replies: 19
- Views: 5197
PS/2 Keyboard Working with ATTINY and I2C
Hey guys, I have a X16 compatible computer I've been working on as a hobby. I've been mostly working on my own VDP and kernal while awaiting the release of the X16. However since the release of the Vera code I went ahead and built my own 'vera' and can now boot the X16 kernal on my own hardware. I...
- Fri Apr 29, 2022 2:59 am
- Forum: Official Announcements
- Topic: VERA design is now public
- Replies: 9
- Views: 7149
VERA design is now public
<a contenteditable="false" data-ipshover="" data-ipshover-target="<___base_url___>/index.php?/profile/58-frank-van-den-hoef/&do=hovercard" data-mentionid="58" href="<___base_url___>/index.php?/profile/58-frank-van-den-hoef/" rel="">@Frank van den Hoef</a>, I want to sincerely thank you for open...
- Wed Dec 01, 2021 8:00 am
- Forum: Official Announcements
- Topic: PS/2 Direction for the Commander X16
- Replies: 87
- Views: 1003764
PS/2 Direction for the Commander X16
Any luck getting the PS2 working with the VIA's @ 8mhz ?
- Fri Jun 18, 2021 12:28 am
- Forum:
- Topic: External RS-232 Interface, storage, and second screen.
- Replies: 70
- Views: 28135
External RS-232 Interface, storage, and second screen.
So out of curiosity, why not just design an expansion card and stick it straight on the data / address bus? There is plenty of space in the IO area for the chip and something like the SC28L92 only has 4 registers lines so technically it could fit into half of one of the available expansion ranges. ...
- Mon Apr 05, 2021 4:29 am
- Forum:
- Topic: Addressing logic
- Replies: 66
- Views: 19738
Addressing logic
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- Mon Apr 05, 2021 4:24 am
- Forum:
- Topic: Addressing logic
- Replies: 66
- Views: 19738
Addressing logic
DANG IT!!! Found the last issue, Labeled the RW pin RWB in on the main sheet and RW in the logic sheet. Had to run a bodge from the RW input on my PAL to RWB net and now the board runs stable at 15Mhz!! woot!! Already started the 2nd revision with a few other enhancements like an LED array to sho...
- Mon Apr 05, 2021 2:50 am
- Forum:
- Topic: Addressing logic
- Replies: 66
- Views: 19738
Addressing logic
Nope, I cooked the Oscillator <span><span class="ipsEmoji">?</span> , I must have hooked something up backwards, </span><span>Ordered a new 8mhz oscillator and it's fine. </span> <span>Also figured out the issue with the flipflops on the banks. I was sending the clock signal to the flipflops when t...
- Mon Mar 29, 2021 9:15 am
- Forum:
- Topic: Addressing logic
- Replies: 66
- Views: 19738
Addressing logic
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- Mon Mar 29, 2021 3:54 am
- Forum:
- Topic: Addressing logic
- Replies: 66
- Views: 19738
Addressing logic
Well I decided to go with some PAL's to clean up the addressing logic, it runs for hours at 11mhz on the breadboard, and only a few minutes @ 12mhz. The data lines get an occasional weird artifact on high, but the address lines look pretty good, there is some small artificating here and there but d...
- Thu Mar 11, 2021 5:38 pm
- Forum:
- Topic: Addressing logic
- Replies: 66
- Views: 19738
Addressing logic
So much to learn and so little time haha. At least I can say it's a hell of a lot cheaper of a hobby than my previous reef keeping or RC Helicopter hobbies. I'm thinking it might be time to retire the old DSO nano scope and move into a benchtop 2 channel scope. I can't believe how cheap it is to h...