Saturday, June 26, 2010

Gold Purple Ceramic chips from 1976

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I picked up a few (about 22) NOS gold ceramic DRAM and two 6820 chips recently. Here they are on an Obtronix board where I tested them. Out...
Friday, June 18, 2010

Aurelien Zavattiero's Hand Wired / wire wrapped Apple 1 up and running

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Wednesday, June 2, 2010

Hand Wired / Wire wrapped Apple-1 = WOW

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My friend Aurelien Zavattiero sent me these images earlier this week. He has spent the last 5 months working on a wire wrapped Apple-1 from...
1 comment:
Monday, May 31, 2010

A1-Mimeo clone up and running (BASIC)

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Apple-1 (Mimeo) Clone with the BASIC firmware card attached, shows the BASIC up and running, Hello World!. After a 2+ hour debugging sessio...
Tuesday, May 25, 2010

A1-Mimeo (Apple-1 clone) stuffed - first power up test

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No keyboard attached. I turned on the power and quickly went around the board with the back of my hand, looking for hot chips, and watching...
3 comments:

Initial Power applied to the A1-Mimeo before stuffing the board

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If you're wondering about the power supply and how to build it, please see my earlier posts when I built the first clone. I am using t...
Monday, May 24, 2010

Chip Select Jumper Configuration

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W might normally be connected to E so that memory bank W is available for the Cassette Interface Adapter (e.g. to load BASIC from tape into ...
Saturday, May 22, 2010

A1-Mimeo Assembly, day 2 (less stuffing the chips)

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Friday, May 21, 2010

A1-Mimeo DIP sockets completed by 2:30 AM

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All DIP sockets soldered on the Mimeo-1. This weekend I'll try and finish up the rest of the components.
Tuesday, May 18, 2010

Datanetics Keyboard Disassembled

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Last weekend, on the same morning that I filled in the Mimeo-1 vias, I took apart the Datanetics Keyboard. I have many images of the proces...
Sunday, May 16, 2010

Building the Apple-1 Mimeo - filling in the Vias

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Saturday, May 15, 2010

White Stickers

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Have you ever noticed that some of the original Apple-1 units have a small white sticker on the back? I have never seen a number greater th...
1 comment:

Apple-1 Registry

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Mike Willegal is putting together a registry of existing (allegedly), Apple-1 originals. If you have any information on any of the units Mi...
Friday, May 14, 2010

Wendell Sander's Apple-1 Website

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I've been meaning to post this link provided by Wendell Sander -- it is a work in progress. There are source files for Apple-1 programs...
Monday, May 10, 2010

Apple-1 BASIC Firmware Card... it works.

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See the video of the card up and running Hello World! I used a 512k EPROM because it's all I had on hand. BASIC is only 4k so y...