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MOCKINGBOARD MANUAL

Submitted by Khaibitgfx on February 8, 2022 - 4:30pm

I have recreated the manual for the Mockingboard sound card, it is a PDF, recreated means it's totally new not a scan, if there is any interest in this I can upload it here.

 

#Apple2 #FujiNet bring-up status report 2022-01-22

Submitted by Thomas Cherryhomes on January 22, 2022 - 8:40am

Hello, everyone. 

As some of you know, I'm the public face of the #FujiNet project, which is a wireless network adapter that originally was designed for the #Atari8bit systems, and is being brought forward to more systems, including the #Apple2, with the goal of reaching every 8-bit computer and game console by the end of the decade.

It provides:

Tags: 
Apple II
FujiNet

USING EWORLD!

Submitted by purpl3 on July 25, 2021 - 1:35pm

hi guys

 

im using eworld from now on so if you want

to message me or so im really active on eworld

 

Tags: 
eworld

Preserving a NOS Basis 108

Submitted by abirahemmed on July 10, 2021 - 1:56am

I was lucky enough to recently acquire a new-in-box Basis 108, a German-made Apple II clone with a Z80 coprocessor for CP/M. It's a big, heavy beast with a metal case and high-quality keyboard. The original owner was a Kaypro dealer who bought it for evaluation purposes and never used it. My original intent was to get it working and use it, but once I saw it, I realized that it needs to be preserved as is. 

 

Preserving a NOS Basis 108

Submitted by Michael Nadeau on March 19, 2021 - 9:34am

I was lucky enough to recently acquire a new-in-box Basis 108, a German-made Apple II clone with a Z80 coprocessor for CP/M. It's a big, heavy beast with a metal case and high-quality keyboard. The original owner was a Kaypro dealer who bought it for evaluation purposes and never used it. My original intent was to get it working and use it, but once I saw it, I realized that it needs to be preserved as is. 

 

Tags: 
clone
Basis 108

Almost there!

Submitted by gareth_IIe on October 1, 2020 - 10:34am

I replaced the HAL with a GAL I programmed and it made absolutely no difference.  That lead me to suspect he MMU (344-0010-B) of being fauklty and I was able to get hold of a replacement MMU temporarily.  I swapped the MMU over and it sprang to life!  The only remaining fault is thet the keyboard input is garbled, however as I have not replaced he Keyboard ROM and the original gets pretty hot, I think I can guess what the problem is.  My attention now is on how to replave the MMU.

Tags: 
Apple IIe Fault Repair MMU 344-0010-B

Getting warm, in more ways than one

Submitted by gareth_IIe on September 1, 2020 - 10:08pm

So in my last entry I mentioned that the ICs LS245, 341-0170-A, 74166, 6502 and 341-0150 were getting warm.  This wasnt the full list, the MMU, IOU and ROMs were also feeling a bit above room temperature, but it was subtle.  After looking at the schematic however, I think I now have a pretty good idea of what's going on.  The LS 245 is getting very hot.  It is an octal bus trancever that connects 74166 to the databus, based on it's inputs from the HAL and the MMU.  The 74166 is also getting very hot and it is controlled by the MMU and the IOU.  The ROMs and the CPU are getting hot because t

Tags: 
Apple ][e repair HAL PAL GAL 16v8 341-0170-A

Garbled screen, but progress

Submitted by gareth_IIe on August 30, 2020 - 9:33pm
So the first thing I tried was swapping the RAM out and that had no effect.  I then had a look at the EF ROM.  Testing it wasn't too difficvult, and with the air of an Arduino and breadboard I descovered that blocks of the rom appeared blank.  I read the rom a few times and the blank areas moved about.  I put a PCB together with a ZIF socket and soldered the connections to make certain the blank areas weren't a loose connection.  I then downloaded the rom, bought an EPROM and turned my reader into a programmer.  However with the faulty rom replaced very little changed, how
Tags: 
Apple ][e repair

First sign of life in over 25 years from my Apple ][e

Submitted by gareth_IIe on August 5, 2020 - 10:15pm
So the replacement caps arrived today.  It turned out that while one of the tantalum capacitors on the main board had failed short, some actually seemed ok.  However I replaced the lot as a couple more had odd readings and there are only 9 of them anyway.  Powering the board up I actually got some output, though it's garbage with a flashing cursor a 3rd of the way down the screen.  Still, not at all bad for a computer that has sat idle for 25 years.  I'm thinking a short on the data or address bus, or maybe a faulty ram chip.
Tags: 
Apple ][e repair

The resurrection of my Apple ][e

Submitted by gareth_IIe on August 4, 2020 - 2:56pm

Around 25 yeasr ago (maybe longer) I turned my Apple ][e on and instead of booting I got nothing out of it.  I had a spare power supply so I swaped them over but to no avail.  I put the machine asside to repair and...

 

Tags: 
Apple ][e repair

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