Commando 2084 is the mix between Commando and Robotron 2084: it is like the original Commando game, but using the Robotron 2084 controls.

Announcing Unijoysticle 2: Use modern Bluetooth controllers (gamepads, mice, smart TV remote controllers) in retro computers like the Commodore 64/128, Atari ST, Amiga and more. For further info go here: /unijoysticle2

A few months ago I got an Atari 1040 STF. I knew nothing about it when I got it, except that it was a similar to the Amiga. The Atari ST, the Amiga and the Macintosh were computers released in the mid 80’s, all of them based on the Motorola 68k, and all of them came with a windows-based GUI. This was a revolutionary step compared to the 8-bit machines which were CLI text-driven. ...

Updated 2018–10–08 A demo for the IBM PCjr by Pungas de Villa Martelli. It was presented at Flashparty 2018 and won the Demo category. Requirements An IBM PCjr with at least 64k RAM. Download Source code: https://github.com/ricardoquesada/64k-ought-to-be-enough Binary: pvm-64ko.zip (does not run on emulators) Technical description The demo is divided in the boot loader and demo 3 parts ...

The Cromemco System Three is a Z-80 based computer. Which is nice, because I always wanted to learn Z-80 (this is my second Z-80 computer, the other one is a MSX2). But what I like about the Cromemco is how well-built it is. I love it. The computer is that not big, but it is a very heavy computer. ...

It’s well-known that you should measure the performance of your code, and not rely only on the opcode’s “cycle counts”. But how fast is an IBM PC 5150 compared to a PCjr ? or to a Tandy 1000? or how fast is the Tandy 1000 HX in fast mode (7.16Mhz) compared to the slow mode (4.77Mhz) ? Or how fast is a nop compared to a cwd ? I created a test ( perf.asm) that measures the performance of different opcodes and run it on different Intel 8088 machines. I run the test multiple times just to make sure the results were stable enough. All interrupts were disabled, except the Timer (of course). And on the PCjr the NMI is disabled as well. ...

IBM PCjr zero-day data-destroy vulnerability (AKA: Joykill).

The IBM PCjr BIOS is very well documented in the IBM PCjr Technical Reference manual (a must read for every PCjr developer). The only problem is that navigating that code is not easy. It has all the problems from scanned books: the fonts don’t look good no hyper-links and difficult to search So I dumped the BIOS and started analyzing it with IDA Pro 5.0 - Free version. I added some of the original comments from the Technical Reference manual, and added some comments of my own. ...

Happy new year! We ( PVM) ported our Tandy 64 intro (originally designed for the Tandy 1000HX) to the IBM PCjr. Requirements: IBM PCjr. with 256k RAM Download: Binary: tandy64jr.zip Source code: https://github.com/c64scene-ar/tandy64/tree/ibm_pcjr Worth mentioning: Runs flicker-free Stable raster-bar, without garbage (world-first?)

With PVM with released an intro for the Tandy 1000 HX. The Tandy 1000 HX uses the Intel 8088-2 CPU. Which is a suuuuper slow CPU (slower than the 8086). With all its wait states and its limitations on the video card (no hardware sprites, no charset redefinition) it makes it comparable with a Commodore 64. In fact, for certain things a Commodore 64 if way faster. Without further ado, this is the Tandy intro: ...