14 blog posts tagged vintage computing

Screenshot of Disk Image Manager showing a FAT at track 2 sector 5
FEB
13
2023
Technology14 minutes

Extracting files from Tatung Einstein disk images

Kevin Edwards got hold of some 3" disks containing source code to various old commercial games and once they were imaged with a high quality process (a Kryoflux) it was time to write some tooling to get the files out of the corresponding DSK file.

A 3-inch, 3.5-inch, and 5.25-inch floppy imaging machine in black
FEB
8
2023
Technology5 minutes

A quick primer on floppy disks

I've always been fascinated by floppy disks from the crazy stories of Steve Wozniak designing the Disk II controller using a handful of logic chips and carefully-timed software to the amazing tricks to create - and break - copy protection recently popularised by 4am.

Screenshot of Mac OS 9 initializing a drive inside QEMU on Windows
MAR
21
2021
Technology7 minutes

Mac OS System 9 on Windows

I'm often digging into old bitmap font and UX design out of curiosity - and someday hope to revive a lot of these fonts in more modern formats using a pipeline similar to that for ZX Origins so we can get all the usable fonts, screenshots etc. out of them.

The cover of my ZX Spectrum +3 manual
MAY
5
2020
Technology2 minutes

Notes from my Spectrum +3 manual

I've recently been working on a full HTML5 conversion of the Sinclair Spectrum +3 manual with full canvas-drawn screenshots and diagrams for smooth scaling/high res displays as well as some close font matching and layout as well as cross-reference links all over the place.

Figuring out resistor levels and sync signals
JUN
8
2018
Technology8 minutes

Revisiting my BBC Micro - display, speech & more

It's been a while since I blogged about Revitalizing my BBC Micro. In that time, I've performed a few upgrades readers might find interesting.

As useful as the tiny Amstrad CRT was, I wanted something bigger, brighter, and sharper. LCD is terrible for retro systems with blurry scaling attempting to draw images designed to take advantage of CRTs. Emulator authors spend significant effort trying to mimic CRT effects for an authentic retro feel - but the best option is to use a CRT.

TRS-80 system font
AUG
9
2016
Typography6 minutes

Typography in bits: For a few pixels more

Examining the system fonts of the TRS-80 Color Computer, Dragon, Tatung Einstein, Commodore 128, Texas Instruments TI-99/4A, and Oric Atmos.

BBC Micro attached to Amstrad CPC monitor and twin floppy drives
MAR
29
2015
Technology7 minutes

Revitalizing a BBC Micro

My "Beeb" is in good condition and works well, but the case screws have long since disappeared (a common theme in my collection), and it needed a good clean. These older mechanical keyboards attract dust and dirt...

Sinclair QL system font in medium resolution
JUL
20
2014
Typography5 minutes

Typography in bits: Other English micros

Examining the system fonts of the Sinclair QL, Memotech MTX512, Amstrad PCW, Acorn Archimedes and SAM Coupé.

IBM CGA system font in low resolution
MAR
27
2011
Typography6 minutes

Typography in 16-bits: System fonts

A look at the system fonts of 16-bit machines including the IBM CGA & VGA Adapters, Apple Macintosh, Commodore Amiga, and Atari ST.

Commodore PET
FEB
20
2011
Typography9 minutes

Typography in 8 bits: System fonts

Examining the system fonts of the Commodore PET, Apple ][, Atari 400/800, Acorn BBC Micro, Sinclair ZX Spectrum, Commodore 64, Amstrad CPC, and MSX.

A photograph of my Acorn BBC Master 128K
DEC
29
2009
Personal4 minutes

Origins of a love affair

From an earliest memory of a cream colored box emblazoned with letters, mostly black – some red, came an owl proclaiming allegiance to the BBC.

Preview of the AltoMono font
AUG
25
2008
Typography2 minutes

The Xerox Alto mono-spaced font rises again

Computing history tells us of a mythical place where many of the innovations we take for granted today were either invented or refined to a working level at a single location known as the Xerox’s Palo-Alto Research Center (PARC).

Placeholder image
AUG
5
2008
Personal3 minutes

How did I get started in software development?

Ken Egozi tagged me with the latest meme and this time it’s at least relevant :)

Elite on the BBC Micro
NOV
7
2006
Personal3 minutes

Adding depth to my programming ability

I remember gazing at the screen of Acornsoft’s Elite in my childhood wondering what the code behind those 3D images looked like.

How did they rotate like that? How did it know which lines to hide? And more importantly where I can get a good price for this cargo hold of radio-actives and platinum?