You can watch a new video from the Commodore History YouTube channel. In this episode: Dave shows how to install a Compu/Think ExpandaMem in a Commodore PET/CBM computer from the year 1979.

Vector Battle is a new game for the Commodore CBM/PET and VIC20 computer. Developed by Milasoft and Deelight. You command an armoured fighting vehicle equipped with a forward-firing cannon, defensive shields, radar and a limited fuel supply. Navigate the vector battlefield, locate hostile units, destroy them before they destroy you, and keep your machine supplied with fuel.

2085 is a new game for the PET/CBM and VIC20 computers, developed by Milasoft. You are the last line of defence for a scattered human family trapped inside an arena crawling with hostile machines. Move through the chaos, fire in any direction, rescue the humans you can reach, and survive wave after wave of increasingly dangerous enemies.

River Run is a faced-paced scrolling shooter for Commodore CBM/PET computers, developed by Milasoft. Your mission is to fly over the river, weaving through the bends and passages while keeping an eye on fuel levels. Gunboats appear in the beginning but as the difficulty increases, helicopters, diving jets and land-based tanks join the fight. Destroy bridges to keep moving, take out enemies for score chains, and fly over FUEL pickups before your tank runs dry.

Tunnel Tumbler is a new game for the Commodore CBM/PET computers, developed by MilaSoft. You are the Garden Guardian, a fiercely territorial mole digging deep beneath the soil. An infestation of ravenous Borer Beetles and acid-spitting Bombardiers has invaded your underground home. Grab your trusty pneumatic dart-pump, carve out your tunnels, and defend your territory! Fire your air-dart to latch onto an enemy bug. You must rapidly pump the nozzle four times to inflate and completely burst the invader. Massive boulders are buried throughout the soil. Dig out the earth directly beneath them to send them crashing down on pursuing bugs for massive bonus points.

PETFall and Yars Galaxy are two new games for the Commodore CBM/PET computer. In PETFall you race across a massive procedurally generated world hunting for treasure, dodging rolling logs, alligators, scorpions, and quicksand. In Yars Galaxy you must nibble through a living shield wall, arm your cannon, and fire, then dodge your own shot on the way back. Both games are developed by milasoft64 and will be available for the Commodore C64 computer soon.

Tynemouth Software has written a blog about the repair of a Commodore PET 3032 computer. The problem with this computer is that it has no video output signal.

Two of the earliest British text adventures ever sold, Catacombs and Goblin Towers, both written by Brian Cotton and published by Supersoft in 1981, have been recovered in their original Commodore PET/CBM form. The 45-year-old disks were read on a Commodore 4040 disk drive and copied to a SD card. But Cotton had built a surprisingly clever protection scheme into the game, not to stop copying, but to stop players from listing the BASIC program and cheating their way through the adventure. It had to be understood and removed before the game could be examined and preserved properly.

Chuck Hutchins made a new video about retro computers. This time he is talking about the EconoPET. This is a replacement motherboard for the Commodore CBM/PET computer, developed by Daniel Lehenbauer.

Steve J. Gray developed a 40/80 column switcher for the Commodore PET/CBM 8296 computer. In his blog you can read about the hardware installation and changes to the Editor ROMs.

You can watch a new video from the Commodore History YouTube channel. In this episode: Dave shows a method of repairing old PET/CBM keyboards which have bad response to a key press.

You can watch a new video on the Root42 YouTube channel. In this video: The repair of a Commodore 4040 disk drive, that has a problem with booting up.

Tynemouth Software has written a blog about the video conversion board in the Commodore 4064 computer. This board makes it possible to use a monochrome monitor from the CBM/PET with the Commodore C64 motherboard.

You can watch a new video from the Commodore History YouTube channel. In this episode: Dave uses a Commodore PET computer as a virtual cassette drive to load programs to a KIM-1 computer.

You can now watch a new YouTube video from André Fachat. In this episode of 8-bit-times: André is building a new keyboard for the CBM/PET computer. The keyboard is based on a design from Steve J. Gray, which can re-map keys and has LED backlighting.

Tynemouth Software has written a blog about the repair of a Commodore 4064 computer. The 4064 is a C64 computer inside a CBM/PET case but it does not have a SID-chip or a RF-modulator. The fault was a bad character ROM-chip.

Jason Cook started a Kickstarter campaign to make a game for the Commodore CBM/PET computers. In this version many improvements will be added such as Magic Spell awarded upon completion of quest, a buff spell that has 3 charges per zone change and a river zone where a rowboat is utilized.

Retrohax has written a blog about repairing a Commodore CBM 3032 computer. The repairs are replacing a potentiometer, painting the case, replacing two voltage regulators, a new fuse-housing and power cord, cleaning and repairing the keyboard.

Tynemouth Software has written a blog about using a serial interface with the Commodore PET/CBM computers. He also built a small interface to connect the Commodore CBM/PET computer to a FTDI USB to serial converter.

Tynemouth Software has written a blog about the repair of a Commodore PET 2001 computer. The computer had a problem with the video output which was caused by multiple logic ICs that were not working correctly.

You can watch a new video from the MicroCore Labs YouTube channel. In this video: The replacement of the original 6502 CPU with an MCL65 in a Commodore PET4016 computer. The MCL65 is a FPGA that emulates the 6502 CPU and can also emulate RAM and ROM memory. And it can do all of this at a higher speed.

I.C.B.M. is a strategic game for the CBM/PET computer (32 kB RAM). In the game you control the Intercontinental Ballistic Missiles of the USA, and must react if there is an attack of the U.S.S.R.

Berserk is a new arcade game for the Commodore CBM/PET computer, developed by milasoft64. The features are: 200+ unique rooms, three robot styles, multi-firing ability, 80x50 resolution and keyboard or joystick. In the game you must destroy the robots while avoiding the electrified walls of the maze.

The EconoPET 40/8096 is a open hardware CBM/PET mainboard replacement, developed by Daniel Lehenbauer. The EconoPET can be used to repair or upgrade a Commodore PET/CBM 2001 / 30xx / 40xx or 80xx series machine. The EconoPET can also be used independently with an HDMI display and USB keyboard.

Antal Arpad Florian Udvari made a new version of the petdisk-esp32, based on the CBM Petdisk from bitfixer. This version has more SMD components and can be ordered from JLCPCB.

Tynemouth Software has written a blog about the repair of a Commodore CBM 4016 computer. The motherboard was missing IC's, there was some damage to the PCB and the IC-sockets and a few IC's were broken.

PETpeeve is a Commodore PET 8296 demo, developed by Rabenauge, Plush and Crest. The demo was released at the Deadline Demoparty 2025 and reached the first place in the Old-school Compo category. The features are: Interlace 80x50 characters, Hires-GFX, 8 shades of green and a diskette fast loader.

You can now watch a new YouTube video from André Fachat. In this episode of 8-bit-times: UltiPET, Blinkenlights, FPGASID, I/O board B-series and CC2025 impressions.

You can read a new blog from cpt_tom about simulating the Commodore PET computer. To simulate the PET he uses the Digital Circuit Simulator by Helmut Neemann. He has a made a simulation for the CBM3032 (dynamic RAM) and the PET2001 (static RAM).

Tynemouth Software has written a blog about the PET 2001 6540-010 character ROM replacement. This updated version has a miniature switch that makes it possible to switch between two character sets (BASIC 1 and BASIC2/4).

Ephemeral Cathodic Relay is a new demo for the CBM 8296 computer, developed by Elder0010 (code) and LRNZ (pixels). The CBM 8296 has no re-definable character set and only a beeper for sound. But the demo features a new video mode exploiting the decay time of the CRT phosphors, 1-bit samples and IRQ loading from the disk drive.

You can watch a new video from the Geek With Social Skills YouTube channel. In this episode: The restoration of a CBM 4032 computer that was used in the 80s at the Alameda Unified School District. In this restoration: replacing the voltage regulators, electrolytic capacitors, IC-sockets, 2114 video RAM chips and repairing the keyboard conductive pads.

You can watch a new video on the Little Car YouTube channel. In this episode: The story of the Commodore PET computer.

You can now watch a new YouTube video from André Fachat. In this episode of 8-bit-times: The repair of two Commodore PET/CBM keyboards.

Tynemouth Software has written a blog about the Mini PET 40/80 Internal. This is a drop in replacement motherboard for a Commodore PET computer, supporting 40 and 80 columns and 32 kB RAM, and a choice of BASIC versions.

You can now watch a new video from the Poking Technology YouTube channel. In this episode David shows a polyphonic 3.5-channel chip tune tracker for the Commodore PET. The music is a cover of Proton's SID cover of Jugi's Onward Ride.

Qixie is anew game for the Commodore PET/CBM computer, developed by milasoft64. The game is based on the C64 version of game Qix, developed by Roman Werner. In the game you must claim as much of the screen as you can, but avoid the sparks along the border.

Norbert Landsteiner wrote a blog about the new debug options for the PET2001 emulator. New: Breakpoint for address ranges, a trap for illegal instructions, a CPU log of the last 1,000 instructions and a breakpoint indicator showing, on which type of breakpoint the emulator had been halted.

You can now watch a new video from the Poking Technology YouTube channel. In this episode David talks about playing audio on a Commodore CBM/PET 4032 computer. He uses a sampling rate of 60 kHz, but only 1 bit.

Michael Sachse, developed a replica of the HAL PCG-6500 expansion card. The HAL PCG-6500 made it possible to create a programmable character set generator for PET/CBM computers. This version works with the CBM 2001/3001, and uses DMA-access at $a000 or $9000 for transferring the characters.

You can read a blog from Ken Shirriff about repairing a Commodore PET2001 computer. When the computer started, the display was full of random characters. In the end, the computer had 6 bad ICs: 2 ROMs and 4 RAMs.

Steve J. Gray developed a switchable ROM cartridge for the Commodore CBM-II computer. The cartridge has a 256 kB EEPROM, which makes it possible to store 8 ROMs of 24 kB. There is also an option to use the unused CBM-II memory ranges ($1000 or $C000) with an extra connection to the PLA chip.

Tynemouth Software has written a blog about a new product for the Commodore CBM/PET computers. This is an improved version of the PET Composite Video Out board, which is now available as a kit. The board only has through-hole components, and is relatively easy to assemble.

A new video from the Hey Birt YouTube channel is now available. In this video, Birt is repairing a Commodore 2000K game console.

Norbert Landsteiner wrote a blog about making the Globe demo for the Commodore PET-2001 computer. The difficulties for making revolving globe demo are the restrictions in memory and only PETSCII characters for the screen.

The Globe demo in the online PET-2001 emulator.

Escape From PETSCII Castle is a new game, inspired by Wolf3D, for the CBM/PET computer, developed by jimbo. Shoot enemies, gather treasures, and find the lift to escape.

You can read an interview on the Spillhistorie webpage with Peter Jennings, who is the creator of Microchess. The chess-game Microchess was available for the Commodore KIM-1, and is one of the first commercial home computer games ever published.

You can now watch a new video from the Rudy's Retro Intel YouTube channel. In this episode: The repair of a Commodore SuperPET computer.

If you need a game for the Commodore PET/CBM computers, you can take a look in the PET Gamebase on the commodoregames.net file server. The collection includes colour PET programs, Milasoft collection, Jimbo collection, joystick patched games, demos, rare titles and more.

You can now watch a new YouTube video from André Fachat. In this episode of 8-bit-times: The current state of the Micro-PET family, the Ulti-PET, the Micro-PET and the Ultra-CPU. André talks about the system, graphics, sound features and the I/O.