1977

Signetics 2519

Submitted by logjam on September 7, 2005 - 4:25pm

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.

File Type: 
Schematics, subroutines, etc.
Platform: 
Apple I
Year: 
1977

Signetics 2513

Submitted by logjam on September 7, 2005 - 4:24pm

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.

File Type: 
Schematics, subroutines, etc.
Platform: 
Apple I
Year: 
1977

Signetics 2504 Datasheet

Submitted by logjam on September 7, 2005 - 4:22pm

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.

File Type: 
Schematics, subroutines, etc.
Platform: 
Apple I
Year: 
1977

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

Submitted by logjam on March 12, 2005 - 3:38pm

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.

File Type: 
Development Tools
Platform: 
Apple I
Year: 
1977
Subscribe to 1977