Apple II

GGLABS Memory Test V0.44

September 15, 2019 GGLABS

GMT (GGLABS Memory Test) is a new developed memory test for vintage computers optimized for speed and coverage. The code is based on the test algorithms described in “Testing Semiconductor Memories: Theory and Practice” by A.J. van de Goor. The program is mostly in C plus small sections in assembly.

Apple II

NANOBUG – Buttons and USB UART for NVIDIA Jetson Nano

September 11, 2019 GGLABS

Project Status: work in progress

The NVIDIA Jetson Nano is a great device and its choice of I/O is ideal for user space development. If you are a kernel hacker, however, you will soon feel the need for serial console and a reset button. If you want to hack the bootloader you

Apple II

Juiced.GS to publish in 2020

July 30, 2019 Juiced.GS

JULY 19, 2019 — LEOMINSTER, MA — Juiced.GS, the world’s last and longest-running Apple II print publication, will publish its twenty-fifth volume (issues #97–100) in 2020.

“We’ve enjoyed a lot of milestones over the years: our 1,000th article, our first full-color covers, a septupling of our subscriber base, and more,”

Apple II

CGA2RGBv2 – Digital RGBI to analog RGB for C128 and IBM PC MDA/CGA/EGA

July 20, 2019 GGLABS

Project Status: released

The 80 column output of the Commodore 128 is the same digital RGBI used by the original IBM CGA graphics adapter. Unfortunately nowadays is quite difficult to find a monitor with the suitable RGBI input. The CGA2RGBv2 adapter will convert the TTL RGBI to analog RGB suitable to be

Apple II

New Stock Arrived – Phasor v1.0

July 19, 2019 ReActiveMicro

New stock has arrived for the Phasor v1.0! All backorders have started shipping. If you ordered a Phasor it may already be waiting for you in your mailbox! The Phasor v1.0 is a 12 voice sound stereo music and sound synthesizer designed by AE and reproduced by ReActiveMicro. It’s …

Apple II

New Store Item – CPUs and Rare Apple II & II+ ICs

July 17, 2019 ReActiveMicro

We’re glad to announce several new items in the ReActiveMicro Store: The 6502, 65C02, and 65816 CPUs. Along with hard to find Apple II & II+ ICs. In an effort to better support the Retro Community ReActiveMicro is now offering fully tested replacement CPUs for your Apple II systems, …

Apple II

New Store Item – Apple II & II+ Keyboard Encoder IC

June 24, 2019 ReActiveMicro

We’re glad to announce a new item in the ReActiveMicro Store: Apple II & II+ Keyboard Encoder IC The KR3600-070, Apple Part Number 331-0931-B, is the Keyboard Encoder IC for the II and II+ keyboards. We have limited stock of this IC. Available now for only $40. We …

Apple II

Ultimate One Lite v1.0 Update & GITHUB Info

June 21, 2019 Ultimate Apple2

We wanted to keep everyone updated with our current progress with the Ultimate One v1.0 project.

Software development has gone live, contributions are welcome. If you want to know what is exactly going on, please visit our github at We welcome pull requests.

We want to thank capt.

Apple II

GZ/80 – Zilog Z80 turbo card for Apple II computers

June 7, 2019 GGLABS

Project Status: released

The Microsoft Softcard was the first card to allow CP/M software to run on the Apple II. It was originally developed to simplify the porting of Microsoft Basic to the Apple II. It turned out to be a great success and at some point in time it was the