Apple II

How is the Apple II Plus keyboard encoder supposed to work?

Submitted by sharkey1331 on November 23, 2017 - 11:05am

(Darn, I just typed out a huge message, and when I submitted- it disappeared!)

I've recently acquired an Apple II Plus- and when I turn it on, the power light lights, the speaker beeps, and I see Apple II on the screen and a blinking cursor. However, the keyboard doesn't provide any input- except for CTRL-RESET works. No other keys work.

I've googled a bit- reseated any related chip I could find, verified continuity between keyboard encoder board pins and keyboard, keyboard ribbon cable, etc. No avail.

Can anyone point me to documentation of how the encoder is supposed to work? For example, a closed key switch- how is this "read" by the encoder, and what is sent through the ribbon cable to the motherboard?

Jason

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Apple II

Interfacing the Apple

Submitted by wishtoknow on November 22, 2017 - 8:37pm

I found this article on line written by Steve Jobs.
(Yes I am shocked!!)

It appears in the magazine Interface Age.

Unfortunately it is no the whole magazine.
Archive.org has this mag in their archive
by not this particular issue.

Are there any other articles written by him
for the Apple I, or II?

Link is below:

http://www.ataricompendium.com/archives/magazines/interface_age/interface_age_oct76.pdf

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Apple II

AY-5-3600-PRO

Submitted by dvador on November 21, 2017 - 3:55pm

Intermittent keyboard failure on Apple IIe

AY-5-9600-PRO Clock Signal

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Apple II

program working on Apple II / Apple II+

Submitted by dvador on November 16, 2017 - 7:24am

Is there a list of all the programs working on an original Apple II / Apple II+ ?

most of the disk images I'm loading are not working on a II++
- some just crash
- some other end with basic errors
- some other seem to require resources they have...

I guess its due to program for IIe or later...
incompatible with II / II+

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Apple II

issue with Apple II fast scsi card

Submitted by luckybob on November 14, 2017 - 3:29am

Got around to testing this card. I hope it's just a configuration error. Or i'm using the wrong disk.

I'm getting this screen:

IMAGE(http://i.imgur.com/tvLKYzTm.jpg)

Things I've tried:

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Apple II

Diagnostics loop

Submitted by RuneRider on November 12, 2017 - 11:39pm

My IIe seems to enter diagnostic mode by itself and stays there.

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Apple II

IIe Platinum Video problem

Submitted by 6502enhanced on November 12, 2017 - 2:11am

Hi,

I got my first Apple IIe Platinum. I got it for a good price I think (60$). Inside were also a 5.25 controller card and a SSC. That's all very nice.

What is not so nice is the fact that it has a video problem.

IMAGE(https://s8.postimg.org/7ksrlq6t1/Platinum_1.jpg)

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Apple II

got a huge lot of Apple II and IBM stuff, how to test

Submitted by luckybob on November 10, 2017 - 2:51am

I know I don't post often, I still lurk, but I haven't had cause to make a post until now. Long story short, I had a windfall of Apple II and IBM stuff. More stuff than I can ever use for myself! (images included)

I got 7 chassis, in various states, from nearly destroyed, to "passable", power supplies, 4x IIe color monitors, and at least 2 big boxes of cards.

My main concern at this stage, is testing. Naturally, people want tested parts. Power supplies and monitors are easy, but when it comes to other boards... not so much.

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Apple II

New Magazine

Submitted by wishtoknow on November 9, 2017 - 7:19pm

Having been launched in September 2017, a new
magazine has arrived that focuses on
retro computers (Apple II included of course!)
with modern updates.

Link is below.

http://paleotronic.com/

The magazine has also written an emulator
for the modern age.

At this website:

http://www.microm8.com/

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Apple II

strange keyboard failure...

Submitted by dvador on November 7, 2017 - 3:41pm

strange keyboard failure on several board / keyboards....

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Apple II

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