The Last Psion | Alex
@thelastpsion.com
#Psion hardware/software hackery, especially SIBO/EPOC16.
Made #PsiDrive, a USB SIBO SSD reader. Slowly rewriting the SIBO C SDK in Pascal.
⚠️ WARNING: Will sidequest ⚠️
🦣 https://oldbytes.space/@thelastpsion
🏔️ https://codeberg.org/thelastpsion
Made #PsiDrive, a USB SIBO SSD reader. Slowly rewriting the SIBO C SDK in Pascal.
⚠️ WARNING: Will sidequest ⚠️
🦣 https://oldbytes.space/@thelastpsion
🏔️ https://codeberg.org/thelastpsion
Pinned
The Last Psion | Alex
@thelastpsion.com
· Nov 15
Maybe I should do an #introduction?
I'm Alex and I have a PDA problem.
For a quick summary, take a look at the alt text for these photos and the hashtags below. I also wrote a longer intro here: oldbytes.space/@thelastpsio...
#retrocomputing #Psion #RP20240 #Pascal #HaikuOS #PCB #MAME #16bit
I'm Alex and I have a PDA problem.
For a quick summary, take a look at the alt text for these photos and the hashtags below. I also wrote a longer intro here: oldbytes.space/@thelastpsio...
#retrocomputing #Psion #RP20240 #Pascal #HaikuOS #PCB #MAME #16bit
I'd really like to do some more work on the #SIBOSDK today. Unfortunately brain doesn't want to brain, so I'm staring at pages of Pascal, thinking, "OK, Alex, just one array. Just one record. How about just one new type?"
Today might not be the day.
Today might not be the day.
January 15, 2026 at 8:50 AM
I'd really like to do some more work on the #SIBOSDK today. Unfortunately brain doesn't want to brain, so I'm staring at pages of Pascal, thinking, "OK, Alex, just one array. Just one record. How about just one new type?"
Today might not be the day.
Today might not be the day.
Anyone have suggestions for YouTube channels where people are creating cool new stuff for old computers?
With notable exceptions, I'm less into "here's an $OldMachine, how cool!" and want more "here's a new thing I made for $OldMachine that makes it really useful or usable today."
#RetroComputing
With notable exceptions, I'm less into "here's an $OldMachine, how cool!" and want more "here's a new thing I made for $OldMachine that makes it really useful or usable today."
#RetroComputing
January 13, 2026 at 11:39 AM
Anyone have suggestions for YouTube channels where people are creating cool new stuff for old computers?
With notable exceptions, I'm less into "here's an $OldMachine, how cool!" and want more "here's a new thing I made for $OldMachine that makes it really useful or usable today."
#RetroComputing
With notable exceptions, I'm less into "here's an $OldMachine, how cool!" and want more "here's a new thing I made for $OldMachine that makes it really useful or usable today."
#RetroComputing
Reposted by The Last Psion | Alex
greatest steam update of all time, because of one unnecessary detail
January 12, 2026 at 9:34 PM
greatest steam update of all time, because of one unnecessary detail
2025 in retrospect & happy new year 2026! – Gentoo Linux
News and information from Gentoo Linux
www.gentoo.org
January 13, 2026 at 6:30 AM
I can never tell if BlueSky's character limit is a blessing or a curse.
But I would really like Markdown formatting here, if only for code blocks.
But I would really like Markdown formatting here, if only for code blocks.
January 12, 2026 at 7:15 PM
I can never tell if BlueSky's character limit is a blessing or a curse.
But I would really like Markdown formatting here, if only for code blocks.
But I would really like Markdown formatting here, if only for code blocks.
As we're all aware, my "specialism" is a multi-level niche.
My platform of choice is #Psion 's SIBO, 8086 or V30, all but two of which run the EPOC16 OS. So I've not just specialised in portable computers, or even PDAs. I've gone deep.
But that's not specific enough for a nerd like me. Oh no.
My platform of choice is #Psion 's SIBO, 8086 or V30, all but two of which run the EPOC16 OS. So I've not just specialised in portable computers, or even PDAs. I've gone deep.
But that's not specific enough for a nerd like me. Oh no.
January 12, 2026 at 7:13 PM
As we're all aware, my "specialism" is a multi-level niche.
My platform of choice is #Psion 's SIBO, 8086 or V30, all but two of which run the EPOC16 OS. So I've not just specialised in portable computers, or even PDAs. I've gone deep.
But that's not specific enough for a nerd like me. Oh no.
My platform of choice is #Psion 's SIBO, 8086 or V30, all but two of which run the EPOC16 OS. So I've not just specialised in portable computers, or even PDAs. I've gone deep.
But that's not specific enough for a nerd like me. Oh no.
Reposted by The Last Psion | Alex
"Dragonfell" from @cyningstan.bsky.social for the #Psion Series 3 - old-school turn based strategy warring on a fabulous 1990s retro handheld computer platform - what's not to love? :-)
December 30, 2025 at 11:03 AM
"Dragonfell" from @cyningstan.bsky.social for the #Psion Series 3 - old-school turn based strategy warring on a fabulous 1990s retro handheld computer platform - what's not to love? :-)
I feel like I'm still trying to "work out" BlueSky. My posts here rarely get much traction, especially compared with somewhere like Mastodon. In fact, I usually get more responses to my posts on LinkedIn!
How do you guys find it here?
How do you guys find it here?
January 12, 2026 at 12:02 PM
I feel like I'm still trying to "work out" BlueSky. My posts here rarely get much traction, especially compared with somewhere like Mastodon. In fact, I usually get more responses to my posts on LinkedIn!
How do you guys find it here?
How do you guys find it here?
Reposted by The Last Psion | Alex
My #RaspberryPi project - the PsionPi. A Pi 4 is underneath the screen. Then, I have a 3S Waveshare UPS giving power to the whole thing, over which is a #Psion 5 keyboard. A small adapter board converts the keyboard signal to USB. 2 3D printed halves of the case are held together with M2.5 screws.
December 31, 2025 at 4:46 PM
My #RaspberryPi project - the PsionPi. A Pi 4 is underneath the screen. Then, I have a 3S Waveshare UPS giving power to the whole thing, over which is a #Psion 5 keyboard. A small adapter board converts the keyboard signal to USB. 2 3D printed halves of the case are held together with M2.5 screws.
Reposted by The Last Psion | Alex
#Dragonfell is for one or two players. Two players use hotseat mode, which is more convenient on a real #PsionSeries3 than on a PC. There are three levels of computer play: easy, fair, and hard, for when a human opponent is unavailable. Get it from cyningstan.itch.io/dragonfell-p...
December 31, 2025 at 2:40 PM
#Dragonfell is for one or two players. Two players use hotseat mode, which is more convenient on a real #PsionSeries3 than on a PC. There are three levels of computer play: easy, fair, and hard, for when a human opponent is unavailable. Get it from cyningstan.itch.io/dragonfell-p...
Reposted by The Last Psion | Alex
Reposted by The Last Psion | Alex
Aw man 😞 Rest in peace Mr Cheifet, host of Computer Chronicles: obits.goldsteinsfuneral.com/stewart-chei...
What a legend. His work in both presenting and preserving the early days of computer history has been (and will continue to be) deeply appreciated! My condolences to his family and friends.
What a legend. His work in both presenting and preserving the early days of computer history has been (and will continue to be) deeply appreciated! My condolences to his family and friends.
Stewart Cheifet Obituary December 28, 2025 - Goldsteins Funeral
View Stewart Cheifet's obituary, find service dates, and sign the guestbook.
obits.goldsteinsfuneral.com
December 31, 2025 at 9:35 PM
Aw man 😞 Rest in peace Mr Cheifet, host of Computer Chronicles: obits.goldsteinsfuneral.com/stewart-chei...
What a legend. His work in both presenting and preserving the early days of computer history has been (and will continue to be) deeply appreciated! My condolences to his family and friends.
What a legend. His work in both presenting and preserving the early days of computer history has been (and will continue to be) deeply appreciated! My condolences to his family and friends.
I guess that means I do the many jobs that @jesszafarris.bsky.social does? #WordsFromHell
Well, now I'm an English professor...
December 31, 2025 at 8:11 AM
I guess that means I do the many jobs that @jesszafarris.bsky.social does? #WordsFromHell
Reposted by The Last Psion | Alex
Christmas Retro Jigsaw 2025 - Completed it Mate! 👍
December 28, 2025 at 5:16 PM
Christmas Retro Jigsaw 2025 - Completed it Mate! 👍
Reposted by The Last Psion | Alex
I'm hoping to release my latest ultra-comprehensive gold-standard 6502 disassembly in the next few days.
It's been four months in the making and is almost complete.
Elite, Aviator, Revs, Lander… and now this.
Let the countdown begin: 🤖🪨🌲
#retrocomputing #retrogaming #bbcmicro #commodore64 #8bit
It's been four months in the making and is almost complete.
Elite, Aviator, Revs, Lander… and now this.
Let the countdown begin: 🤖🪨🌲
#retrocomputing #retrogaming #bbcmicro #commodore64 #8bit
December 29, 2025 at 7:08 PM
I'm hoping to release my latest ultra-comprehensive gold-standard 6502 disassembly in the next few days.
It's been four months in the making and is almost complete.
Elite, Aviator, Revs, Lander… and now this.
Let the countdown begin: 🤖🪨🌲
#retrocomputing #retrogaming #bbcmicro #commodore64 #8bit
It's been four months in the making and is almost complete.
Elite, Aviator, Revs, Lander… and now this.
Let the countdown begin: 🤖🪨🌲
#retrocomputing #retrogaming #bbcmicro #commodore64 #8bit
I've made progress on #ECOBJ, my next tool rewrite from the #Psion SIBO C SDK. I can now break down a Relocatable Object Module File (OMF) enough to see what the original ECOBJ.EXE does.
Want to see some questionable #Pascal? Here's the repo: codeberg.org/thelastpsion...
#SIBOSDK #retrocomputing
Want to see some questionable #Pascal? Here's the repo: codeberg.org/thelastpsion...
#SIBOSDK #retrocomputing
ecobj
This will become a tool to manipulate 16-bit OMF object files, moving the class descriptor data into the code segment. It will eventually be a drop-in replacement for the Psion SIBO C SDK's ECOBJ.EXE.
codeberg.org
December 30, 2025 at 10:40 AM
I've made progress on #ECOBJ, my next tool rewrite from the #Psion SIBO C SDK. I can now break down a Relocatable Object Module File (OMF) enough to see what the original ECOBJ.EXE does.
Want to see some questionable #Pascal? Here's the repo: codeberg.org/thelastpsion...
#SIBOSDK #retrocomputing
Want to see some questionable #Pascal? Here's the repo: codeberg.org/thelastpsion...
#SIBOSDK #retrocomputing
Reposted by The Last Psion | Alex
I just ordered a St. Stephen's Day pizza.
Deep pan, crisp and even.
Deep pan, crisp and even.
December 26, 2025 at 6:01 PM
I just ordered a St. Stephen's Day pizza.
Deep pan, crisp and even.
Deep pan, crisp and even.
Yesterday evening while OH's family played board games, I was reading about the structure of `FIXUPP` records in the Relocatable Object Module Format.
They're used to me by now.
#retrocomputing
They're used to me by now.
#retrocomputing
December 26, 2025 at 1:16 PM
Yesterday evening while OH's family played board games, I was reading about the structure of `FIXUPP` records in the Relocatable Object Module Format.
They're used to me by now.
#retrocomputing
They're used to me by now.
#retrocomputing
How about a little #Psion gaming for the holiday season! @cyningstan.bsky.social has written a brand new game for the original Series 3 entirely in OPL. I've got it running on my 3mx. The added EL backlight adds an ethereal feeling to the play.
Get your copy here: cyningstan.itch.io/dragonfell-p...
Get your copy here: cyningstan.itch.io/dragonfell-p...
December 25, 2025 at 10:18 AM
How about a little #Psion gaming for the holiday season! @cyningstan.bsky.social has written a brand new game for the original Series 3 entirely in OPL. I've got it running on my 3mx. The added EL backlight adds an ethereal feeling to the play.
Get your copy here: cyningstan.itch.io/dragonfell-p...
Get your copy here: cyningstan.itch.io/dragonfell-p...
Reposted by The Last Psion | Alex
As a little Christmas gift for #Psion fans, Dragonfell is released for the #PsionSeries3! This is a #HOMM inspired strategy war game, featuring ogres, dark elves, dragons and wizards. Finish off your enemy by conquering their citadel. Get it from cyningstan.itch.io/dragonfell-p...
December 24, 2025 at 10:34 AM
As a little Christmas gift for #Psion fans, Dragonfell is released for the #PsionSeries3! This is a #HOMM inspired strategy war game, featuring ogres, dark elves, dragons and wizards. Finish off your enemy by conquering their citadel. Get it from cyningstan.itch.io/dragonfell-p...
Reposted by The Last Psion | Alex
RAM is too expensive, going back to older hardware instead
December 24, 2025 at 11:26 PM
RAM is too expensive, going back to older hardware instead