Apple I, Schematics, subroutines, etc.

Vintage Apple-1 Expansion Card

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Apple-1 Multiplexer Gerber

This is the gerber file for the Apple-1 Keyboard Multiplexor.

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Signetics 2519

This is the Signetics 2519 datasheet for the video section of the Apple 1. Very hard to find. A guy named Hans Otten scanned it from his personal databook he had from the 70s when he made his own video terminal.

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Signetics 2513

This is the Signetics 2513 datasheet for the video section of the Apple 1. Very hard to find. A guy named Hans Otten scanned it from his personal databook he had from the 70s when he made his own video terminal.

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Signetics 2504 Datasheet

This is the Signetics 2504 datasheet for the video section of the Apple 1. Very hard to find. A guy named Hans Otten scanned it from his personal databook he had from the 70s when he made his own video terminal.

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Apple 1 Cassette Prototype

Apple 1 Cassette Interface Rebirth

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Floating Point Routines for the 6502

Yet another document on Floating point routines by Steve Wozniak.

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Replica 1 Schematic

This is a schematic of the replica 1 in pdf format.

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ASCII Hex Equivalents

Program to print ASCII HEX equivalent of any keyboard character

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Processor Section Redesign (ps)

This is a redesign of the Apple I processor section.

Done in XCircuit.

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