1977

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.

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.

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.

Floating Point Routines for the 6502 by Roy Rankin and Steve Wozniak

Originally published in the August 1976 issue of Dr. Dobb's Journal, these
floating point routines allow 6502 users to perform most of the more popular and
desired floating point and transcendental functions, namely: Natural Log, Common
Log, Addition, Subtraction, Multiplication, Division, and conversions between
floating and fixed point numbers.

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