#pcjr — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #pcjr, aggregated by home.social.
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Clone of "Defender" running on my maxxed out PCJr (SD card cart, 640k internal, V20 CPU). #retrogaming #retrocomputing #retrogames #retro #vintagecomputing #vintage #pcjr #ibm
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I have unsynchronized video clips that I'll attach, but I was able to get the actual gameplay for Paperboy showing 16 colors for #PCjr. The options screen eludes me (attached in a reply). I suppose there may be a way to just show the CGA options screen if I can't solve this odd criss-cross pattern.
I should also get MartyPC working for local debugging, because DOSBox-X is not working for me in PCjr mode at all.
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I will try to (safely) make this available to all, and I would like to do further testing, but here we are in the game proper, things looking nice!
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I think I fixed Ultima 4 for the #PCjr so it works in 16 color mode without the black horizontal bar striping. Huh.
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Another fun project for the day. I'm debugging this PCjr which won't boot - no POST, not even a beep.
It looks like the 8284A chip is not toggling the RESET pin on the 8088, so it doesn't run. I replaced a capacitor that feeds the 8284A but that had no effect. I can get the machine to boot if I pull the reset line low by hand. (Composite output is corrupted but RGB output is fine.)
I just need to find a source for 8284A chips. It looks like used is the only option.
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more exceptional 50s style modern art on the cover of this 1983 ibm pcjr game by nasir gebelli of apple ii/final fantasy fame
ibm's in-house artist uncredited, sadly.
one nice touch of humanity in the illustration is the ink overdraw on the far right side, where the artist ran a ruled line from the bottom up to the hypotenuse of the cheese. these tiny "imperfections" add detail, flavour and warmth to what might otherwise be sterile design.
#ibm #pcjr #retroComputing #vintageComputer #dosGaming #design #illustration
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Testing #FujiNet Battleship on my #PCjr :)
#retrocomputing #retrogaming -
Got to do some budgeting today.
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What does it take for 640k of RAM on a #pcjr with IBM sidecars? Five of them. One for extra power, and 4 128k RAM expansions.
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Working on #msdos port of #fujinet battleship, viewing charset on #pcjr over network while hacking on the code in #emacs.
#fujinet makes #retrocomputing and #retrogaming #gamedev even better.
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#atari8bit #apple2 #coco #c64 #plus4 #commodore #trs80coco #msdos #pcjr
All playing the same networked game. Together.
More to come.
That's FujiNet.
(website: fujinet dot online)
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An #Atari8bit, #Atari2600, and #PCjr sit down at a poker table...
Cross-platform, Internet Networked Gameplay for #retrocomputing and #retrogaming devices.
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#FujiNet is a WiFi Adapter for #retrocomputing and #retrogaming systems. It speaks JSON, XML, and HTTPS, so it can talk to any Internet endpoint, directly.
We use it for FujiNet 5 Card Stud, so this DOS based IBM #PCjr has no problem speaking JSON. :)
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FujiNet is a WiFi Adapter for #retrocomputing and #retrogaming systems that (among many other features) brings together cross-platform game play!
Example shown here playing 5 Card Stud btw #Atari8bit, #apple2 and #pcjr systems.
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Happyiness is testing a spare floppy drive ...
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#FujiNet is a #WiFi Network Adapter for #retrocomputing and #retrogaming platforms.
The #RS232 version of the #FujiNet can be plugged up to any vintage PC, like a #PCjr.
Wanna help? Check fujinet.online!
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On Sept 22nd I started the PCjr for a long-term test of the mTCP web server and NetDrive. This time the PCjr was running without a hard drive; all of the content was served from a network attached drive letter via NetDrive.
Last night we had a major wind storm and the UPS was no match for the long power outage, so I had to shut the PCjr down. It nearly made it to 1400 hours of continuous operation, serving my site at brutmanlabs.org.
I think the code is stable ,,
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Greetings! I'm not big on social media but I finally broke down and created a Mastodon account so that people can more easily find me, especially for things related to retrocomputing.
Cheers!
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Can't wait for the power adapter replacement tomorrow to play around with this. 😻 🖥️ #vintagepc #ibmpcjr #pcjr #computers
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Things I wish I had time for:
- #Dreamcast accessory that makes the system think it’s talking to a modem but it’s actually a UART to IP bridge, but without the analog phone bits that are required with #DreamPi. Make this accessory have an expansion header for someone to also attach a BBA emulator to the bus.
- hardware hack for the #PCjr to make #EGA modes that are feature compatible work by mapping memory and implementing registers (and also redefinable characters with shadow RAM)
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Has anyone made a translator/interposer that uses a simple CPLD/FPGA to implement the #EGA / #MCGA modes that are technically doable on #PCjr / #Tandy graphics hardware? There are quite a few games that would be playable (even without a V-20 or PC-Sprint mod) which otherwise don’t run or only run in 4-color #CGA.
