Hey Birt! | Pocket Banner, Data compression in BASIC. Fitting a 5K program into 3K. @HeyBirt | Uploaded July 2022 | Updated October 2024, 11 minutes ago.
Video sponsor: PCBWay: $5 for 2 layer PCBs with 24hr turnaround at pcbway.com
In this video we discuss how to fit a 5K BASIC program into 3K of RAM. Finding ways to work within the limitations of vintage computers can be interesting. This was the case when I decided a banner printing program for a pocket computer would be fun. The problem is that the bitmaps for the characters alone would take more than the total amount of RAM available.
How did we get around this limited RAM problem? Data compression of course? “Data compression in BASIC?” you ask. Yes, at it is not as difficult as it seems at first. Join us and find out how it works and maybe even port ‘Pocket Banner’ to your own small vintage computer.
Timeline:
00:00 – Welcome
01:43 – Too much data, too little RAM
04:06 – Demo #1, graph paper alphabet
09:38 – Program listing and overview
15:16 – Wrap up and Demo #2
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Links
Pocket Banner: github.com/Jeff-Birt/PocketBanner
Casio FX-820P refurb: youtu.be/RdEhWpgQ1r4
Amazon Associated Links Tools:
Battery Spot Welder: amzn.to/3QMaG3T
Hotplate: amzn.to/3rxOtLU
Spudger set I use: amzn.to/3z19pM7
Heat mats: amzn.to/3boKDwl
Amazon Associated Links Chemicals:
CiaKot: amzn.to/3CvVKiY
Overcaot Pen: amzn.to/3s439Bt
Novus Plastic Polish: amzn.to/2VwtFaV
Electronics / PCB cleaner: amzn.to/3ORx62D
Citric Acid: amzn.to/3krkgdt
Amazon Associated Links Parts / Supplies:
Foam sheet, 1mm: amzn.to/37CfTtt
Uxcell shrink wrap: amzn.to/3boKJEd
NiMh tabbed Sun-C: amzn.to/3nHCbxL
NiMh tabbed AA: amzn.to/3OMjBkW
uxCell strain reliefs: amzn.to/3nJ5AaP
3M Double sided tape: amzn.to/3rYCxBX
Credits
Chiptune Thing No. 3 "Victory" by Steven O’Brien soundcloud.com/stevenobrien
Creative Commons — Attribution 3.0 Unported— CC BY 3.0
http://creativecommons.org/licenses/b...
Music provided by Music for Creators youtu.be/ujIMRIJ1JG8
Video sponsor: PCBWay: $5 for 2 layer PCBs with 24hr turnaround at pcbway.com
In this video we discuss how to fit a 5K BASIC program into 3K of RAM. Finding ways to work within the limitations of vintage computers can be interesting. This was the case when I decided a banner printing program for a pocket computer would be fun. The problem is that the bitmaps for the characters alone would take more than the total amount of RAM available.
How did we get around this limited RAM problem? Data compression of course? “Data compression in BASIC?” you ask. Yes, at it is not as difficult as it seems at first. Join us and find out how it works and maybe even port ‘Pocket Banner’ to your own small vintage computer.
Timeline:
00:00 – Welcome
01:43 – Too much data, too little RAM
04:06 – Demo #1, graph paper alphabet
09:38 – Program listing and overview
15:16 – Wrap up and Demo #2
Please consider clicking on the Subscribe button below and then click the bell icon. That way you will be notified when I post a new video. Thanks!
Help support Hey Birt!
heybirt.com - merch
paypal.me/HeyBirt
patreon.com/heybirt
subscribestar.com/hey-birt
Hey Birt! On Social Media!
Facebook:
Soigeneris: facebook.com/Soigeneris-295527583797729
Hey Birt!: facebook.com/HeyBirt
Twitter:
Hey Birt!: twitter.com/HeyBirt?lang=en
Links
Pocket Banner: github.com/Jeff-Birt/PocketBanner
Casio FX-820P refurb: youtu.be/RdEhWpgQ1r4
Amazon Associated Links Tools:
Battery Spot Welder: amzn.to/3QMaG3T
Hotplate: amzn.to/3rxOtLU
Spudger set I use: amzn.to/3z19pM7
Heat mats: amzn.to/3boKDwl
Amazon Associated Links Chemicals:
CiaKot: amzn.to/3CvVKiY
Overcaot Pen: amzn.to/3s439Bt
Novus Plastic Polish: amzn.to/2VwtFaV
Electronics / PCB cleaner: amzn.to/3ORx62D
Citric Acid: amzn.to/3krkgdt
Amazon Associated Links Parts / Supplies:
Foam sheet, 1mm: amzn.to/37CfTtt
Uxcell shrink wrap: amzn.to/3boKJEd
NiMh tabbed Sun-C: amzn.to/3nHCbxL
NiMh tabbed AA: amzn.to/3OMjBkW
uxCell strain reliefs: amzn.to/3nJ5AaP
3M Double sided tape: amzn.to/3rYCxBX
Credits
Chiptune Thing No. 3 "Victory" by Steven O’Brien soundcloud.com/stevenobrien
Creative Commons — Attribution 3.0 Unported— CC BY 3.0
http://creativecommons.org/licenses/b...
Music provided by Music for Creators youtu.be/ujIMRIJ1JG8
![CE-158X Intro – A modern serial / parallel interface for Sharp PC-1500[A], PC-1600, TRS-80 PC-2](https://i.ytimg.com/vi/69ototP0ZlU/hqdefault.jpg "CE-158X Intro – A modern serial / parallel interface for Sharp PC-1500[A], PC-1600, TRS-80 PC-2
In this video we take a look at the CE-158X, a modern serial / parallel interface for the Sharp PC-1500[A], PC-1600 computers. The original Sharp CE-158 interfaces are rare, expensive and limited to 2400bps. We created the CE-158X as a modern higher speed replacement. With a solid transfer speed of 19200bps and an experimental 38400bps it takes far less time to transfer programs. We also incorporated a second serial port with a USB interface and the parallel port is now bidirectional.
Join us and find out more about the CE-158X.
Timeline:
00:00 – Introduction
00:35 – Overview, battery installation, How to Connect
05:56 – How to use, loading files, using parallel port
16:57 – Using USB serial port, How to disconnect
Please consider clicking on the Subscribe button below and then click the bell icon. That way you will be notified when I post a new video. Thanks!
Help support Hey Birt!
https://www.heybirt.com - merch
https://www.paypal.me/HeyBirt
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https://www.subscribestar.com/hey-birt
Hey Birt! On Social Media!
Facebook:
Soigeneris: https://www.facebook.com/Soigeneris-295527583797729/
Hey Birt!: https://www.facebook.com/HeyBirt/
Twitter:
Hey Birt!: https://twitter.com/HeyBirt?lang=en
Links
CE-158X Product Page: https://www.soigeneris.com/ce-158x-serial-parallel-interface-for-sharp-pc-1500
Backpack Drive Plus page: https://www.soigeneris.com/tandy-tpdd-2-backpack-drive-2
Amazon Associated Links Tools:
Fiberglass pen: https://amzn.to/3pWRzIk
Fiberglass pen refills: https://amzn.to/3RgqGdQ
OWDEN Hollow punch set: https://amzn.to/3PXzTXW
Battery Spot Welder: https://amzn.to/3QMaG3T
Hotplate: https://amzn.to/3rxOtLU
Spudger set I use: https://amzn.to/3z19pM7
Heat mats: https://amzn.to/3MXgSVG
Amazon Associated Links Chemicals:
303 Aerospace Protectant: https://amzn.to/3BxRa5Y
CiaKot: https://amzn.to/3CvVKiY
Overcaot Pen: https://amzn.to/3s439Bt
Novus Plastic Polish: https://amzn.to/2VwtFaV
Electronics / PCB cleaner: https://amzn.to/3ORx62D
Citric Acid: https://amzn.to/3krkgdt
Amazon Associated Links Parts / Supplies:
Foam sheet, 1mm: https://amzn.to/37CfTtt
Uxcell shrink wrap: https://amzn.to/3boKJEd
NiMh tabbed Sun-C: https://amzn.to/3nHCbxL
NiMh tabbed AA: https://amzn.to/3OMjBkW
uxCell strain reliefs: https://amzn.to/3nJ5AaP
3M Double sided tape: https://amzn.to/3p9odcG
Noctua 80mm NF-A8 FLX fan: https://amzn.to/3ASVhsJ
Credits
Chiptune Thing No. 3 Victory by Steven O’Brien https://soundcloud.com/stevenobrien
Creative Commons — Attribution 3.0 Unported— CC BY 3.0
http://creativecommons.org/licenses/b...
Music provided by Music for Creators https://youtu.be/ujIMRIJ1JG8")
