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Commodore

Commodore “Video Supergame 64” Bundle

2019-05-28 by Michael Steil

The “Video Supergame 64” is a Commodore 64 bundled with a joystick and three games on a cartridge, sold mainly in Germany in 1988/1989. Here are some pictures. read more

Categories C64, Commodore, Teardown5 Comments

Dumping Commodore 64/1541 Disks with Errors

2019-05-27 by Michael Steil

Many old Commodore 64/1541 disks have read errors, but this doesn’t mean the data isn’t recoverable – with the right nibtools settings and some cleaning. read more

Categories C64, Commodore, Floppy Disks5 Comments

Commodore “Magic Voice” Cartridge for C64

2019-05-262019-05-26 by Michael Steil

“Magic Voice” is an expansion cartridge for the Commodore 64 that can speak 235 predefined words. Here are some pictures. read more

Categories C64, Commodore, TeardownLeave a comment

Falk Rehwagen, TopDesk and GEOS

2019-05-25 by Michael Steil

Here are some of Falk Rehwagen’s thoughts on his involvement with GEOS and TopDesk. read more

Categories C128, C64, Commodore, GEOSLeave a comment

TopDesk 1.3 GEOS64/128 Original Source

2019-05-252019-05-24 by Michael Steil

Thanks to Falk Rehwagen and Jürgen Heinisch, the original source of the TopDesk file manager for the GEOS operating system of C64/C128 is available. read more

Categories C128, C64, Commodore, GEOS3 Comments

Converting a Commodore 1541 or 1570 Drive into a 1551

2019-05-222019-05-22 by Michael Steil

The 1551 is the weird outlier in the family of Commodore disk drives: It is the only drive using the “TCBM” bus instead of Serial or IEEE-488. And what’s even weirder? 1541 and 1570 drives converted into 1551s! read more

Categories Commodore, Floppy Disks, Hardware, TED4 Comments

More Original Commodore Source Code

2019-05-21 by Michael Steil

There have been a few new interesting additions to the Commodore Source Code repository, including: read more

Categories 6502, Archeology, Commodore, Commodore Peripheral Bus, Floppy Disks, GitHubLeave a comment

Commodore Peripheral Bus: Part 5: TCBM

2019-05-202019-05-20 by Michael Steil

In the series about the variants of the Commodore Peripheral Bus family, this article covers the lowest two layers (electrical and byte transfer) of the “TCBM” bus as found on the TED series computers: the C16, C116 and the Plus/4. read more

Categories Commodore, Commodore Peripheral Bus, Floppy Disks, TED3 Comments

Run CP/M on your C64 – using Emulation!

2019-05-19 by Michael Steil

In this episode of computer archeology, we deconstruct a very interesting case of borrowing code from multiple places – but first try this D64 disk image with any Commodore 64 emulator or a real C64: read more

Categories Archeology, C64, Commodore, Operating Systems1 Comment

C64 CP/M Cartridge

2019-05-18 by Michael Steil

The cartridge that makes a C64 a “dual processor” computer: Commodore’s CP/M cartridge for C64 contains a Z80 CPU and comes with version 2.2 of the CP/M operating system. Here are some pictures. read more

Categories C64, Commodore, Teardown13 Comments

Commodore Bildschirmtext II Decoder Cartridge

2019-05-17 by Michael Steil

Here are some pictures of the outside and the inside of a Commodore Bildschirmtext II Decoder Cartridge for the C64 – a 6800-based computer connected to the expansion port! read more

Categories Bildschirmtext, C64, Commodore15 Comments

Blue Chip BCD/5.25 Disk Drive

2019-05-15 by Michael Steil

After previously dissecting the firmware of alternate C64 disk drives, let’s now look at the hardware of one: This is the Blue Chip BCD/5.25. read more

Categories Commodore, Floppy Disks, Teardown5 Comments

The Commodore IEEE-488 Cartridge for C64

2019-05-262019-05-13 by Michael Steil

Commodore 64 disk drives were usually connected through the slow serial bus. This article shows some hi-res photos of the Commodore “IEEE-488 cartridge”, which made the faster PET drives available for the C64. read more

Categories C64, Commodore, Commodore Peripheral Bus, Floppy Disks, PET, Teardown5 Comments

Final Cartridge III with GEOS

2019-05-12 by Michael Steil

The Final Cartridge III is great: It comes with a disk speeder, BASIC extensions, an excellent monitor – and an impressive, but ultimately useless GUI, because there are practically no applications for it. Let’s replace the FC3 GUI with GEOS! read more

Categories C64, Commodore, Final Cartridge III, GEOS, GitHub4 Comments

Commodore MAX Machine

2019-05-10 by Michael Steil

Here are some hi-res pictures of the Commodore MAX machine (aka Ultimax or VC-10), a stripped-down game console variant of the Commodore 64 that was briefly available in 1982. read more

Categories C64, Commodore, Teardown6 Comments

Illegal Opcode Support for the Final Cartridge III Monitor

2019-05-07 by Michael Steil

The monitor built into the Final Cartridge III is one of the best ones for the C64. Some of its unique features are: read more

Categories 6502, C64, Commodore, Final Cartridge III, GitHub1 Comment

Commodore Peripheral Bus: Part 4: Standard Serial

2019-05-202019-05-06 by Michael Steil

In the series about the variants of the Commodore Peripheral Bus family, this article covers the lowest two layers (electrical and byte transfer) of the “Standard Serial” bus as found on the VIC-20/C64 as the main bus, but also supported by all other Commodore home computers. read more

Categories C64, Commodore, Commodore Peripheral Bus, Floppy Disks, GitHub, VIC-205 Comments

GEOS Demo [GIF]

2019-05-072019-05-05 by Michael Steil

The GEOS operating system for the Commodore 64 achieved to replicate much of the GUI of the original Macintosh on a 1 MHz 8 bit CPU with just 64 KB of RAM. The GEOS Demo is a presentation by Berkeley Softworks (BSW), the creators of GEOS, to showcase the features of GEOS and BSW’s applications. read more

Categories Archeology, C64, Commodore, GEOSLeave a comment

The Commodore 8250 Dual Drive Floppy Disk

2019-05-082019-05-05 by Michael Steil

The Commodore 8250 was the high-end 5.25″ disk system for the Commodore PET, with two drives that could each fit 1 MB (4133 blocks free) on a standard disk. Here are some high-res pictures. read more

Categories Commodore, Floppy Disks, Teardown5 Comments

Commodore 264 Series Preliminary Users Manual [PDF]

2019-05-072019-05-03 by Michael Steil

This is the previously unpublished “Commodore 264 Series Preliminary Users Manual”, a prerelease version of the manual of what came to be the Commodore Plus/4. read more

Categories Commodore, Literature, TEDLeave a comment
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