Apple II

A2Pico

The A2Pico hardware comes in two flavours: SMD and TH, see https://github.com/oliverschmidt/a2pico for details.

The other day, the design files for the most recent TH variant were published, see https://github.com/rallepalaveev/a2pico/tree/main/A2Pico.v2.6

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Retronaut: The Apple II: CH03 - The Apple IIc, Apple IIgs and the Apple II's Legacy

The Apple II: CH03 - The Apple IIc, Apple IIgs and the Apple II's Legacy

Entering the mid-eighties, 8-bit Micros, such as the Apple II were becoming a little out-moded.So what could Apple do, to keep the Apple II range fresh?

 

Well, hows about two very different machines?One which re-invented the Apple II as a mobile powerhouse, for office and home.Whilst the IIgs, literally re-invented the Apple II as a new 16-bit computer,to go into battle with the Atari ST and Amiga computers, which had set the home micro scene on fire.

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Retronaut: The Apple II: CH02 - The Apple II+ and Apple IIe

It's 1977, the Apple II has launched and is a big hit. It has issues, but Apple is up to the challenge of taking their fledgling new computer to higher levels.

Learn how they addressed its short-comings in and how these innovations lead to two new and much loved Apple II models, the Apple II+ and the Apple IIe.

But it was not all plain sailing.

Decisions made soon after the Apple II's launch, would lead to Apple striking out on a new project to replace the Apple II, the Apple III.

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RFI keyboard repair (ITT Snap-Action Array)

I've unfortunately purchased a "slightly" incomplete RFI ketboard (beige backed PCB). It was without encoder, as there are a few new replacement options for those. However it was expected that the keyswitches/snap-action arrays would all be intact. I should have known something was up when I noticed a missing screw (as the plastic thread in the keboard frame directly below was broken apart) when removing the pcb for cleaning.

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Most items OK but Apple IIe won't boot

Hi all,

as an old Apple//e enthusiast, I'm happy to join this forum I've been looking at for months. Now that I just bought a machine a few weeks ago (at last! a PAL version)...it fails. Symptoms are :

- Power LED on, no beep (some random cracks sometimes), random characters on full screen (when RAM installed) or complete solid white screen (if RAM pulled out).

After reading as many posts as possible in this forum, here's what I did already following "Sams Computerfacts troubleshooting guide" :

- PSU seems ok (recapped RIFA) : +5.2V, -5V, +11.85V, -11.5V

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Unknown ROMS Help ID'ing

Hi,

  I have a smal box of ][e chips. mixed in the foam are 2 eproms.

I dumped them and attached them here.

The Velan bin is a 27128 eprom. About half way into the file it has a string "booting DOS"

Velan Co 1988 Ver 3 Revision1.6  shows at the top of the file.

 

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Retronaut: New video on origins of Apple II

In this video I explore the origins of the Apple II, its first iteration and why it makes such a great choice for a retro computer collection.

 

In 1977 a trio of computers were launched in the USA and they kicked-off the micro computing revolution. Of the three, the Apple II proved to have more longevity than anyone would have expected.

It became a home computing favourite and in time it would grow into a family of micros that helped pioneer professional video game development.

 

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Apple /// - Only System Utilities 1.3 is not working..

Hi Friends

 

I have an Apple III that I restored back to health and it's about 99% working for me.    For some reason, when using System Ulities 1.3 I can not get the keyboard to be read correctly - it will acknowledge up an down arrows in the main menu but will not recognize any of the valid key strokes (D,F,Q).   

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