Applefritter - Apple I, Schematics, subroutines, etc.

Signetics 2519 (signetics2519.pdf v1 by Signetics)

Wed, 07 Sep 2005 13:25:16 -0700

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. http://www.hansotten.com/

Signetics 2513 (signetics2513.pdf v1 by Signetics)

Wed, 07 Sep 2005 13:24:17 -0700

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. http://www.hansotten.com/

Signetics 2504 Datasheet (signetics2504.pdf v1 by Signetics)

Fri, 16 Dec 2005 12:57:22 -0800

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. http://www.hansotten.com/

Apple 1 Cassette Prototype (031905-Apple1Cassette.jpg v1 by Grant Stockly)

Sat, 19 Mar 2005 13:18:56 -0800

031905-Apple1CassettesMorph.jpg - A quick and dirty "Morph"...not really, I just pasted 031905-Apple1Cassette.jpg on top of 031905-Apple1RealCassette.jpg and set the Opacity on 031905-Apple1Cassette.jpg to 50%. ;) 031905-Apple1RealCassette.jpg - The real Apple Cassette Interface 031905-Apple1CassetteBoardLayout.jpg - Screen Capture of the PCB layout...not tested yet, but it electrically tests against the schematics and Woz's notes. 031905-Apple1Cassette.jpg - The board I had made this week, not all the components are placed yet. I also had no 10k 1% tollerance resistors.

Attachment	Size
031905-Apple1Cassette.jpg	78.76 KB
031905-Apple1CassetteBoardLayout.jpg	68.53 KB
031905-Apple1RealCassette.jpg	44.31 KB
031905-Apple1CassettesMorph.jpg	40.57 KB

Floating Point Routines for the 6502 (Apple1WozDrDobbsFloatingPt.pdf v1 by Roy Rankin and Steve Wozniak)

Sat, 12 Mar 2005 16:52:22 -0800

Yet another document on Floating point routines by Steve Wozniak. This wone was written for the Dr Dobbs Journal. Source code listings are very clear due to the 600dpi scan. Zoom in or print them out. Document is dated September 1976. See http://www.stockly.com/historicdvd.php for information on getting this as well as other large documents on 5 DVDs for the cost of media. Preserved in time thanks to David Craig.

Replica 1 Schematic (r1sch.pdf by Vince Briel and Tom Owad)

Fri, 11 Mar 2005 15:18:16 -0800

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

ASCII Hex Equivalents (ascii.txt by Unknown)

Sun, 15 Aug 2004 12:09:48 -0700

Program to print ASCII HEX equivalent of any keyboard character

Processor Section Redesign (pdf) (Processor_Section.pdf by Tom Owad)

Tue, 03 Aug 2004 13:21:07 -0700

This is a redesign of the Apple I processor section.

Processor Section Resdesign (ps) (Processor_Section.ps by Tom Owad)

Tue, 03 Aug 2004 14:13:54 -0700

This is a redesign of the Apple I processor section. Done in XCircuit.

Processor Section Redesign (ps) (Processor_Section.ps by Tom Owad)

Tue, 03 Aug 2004 13:23:28 -0700

This is a redesign of the Apple I processor section. Done in XCircuit.

GetChar.asm v1.0 by Tom Owad

Tue, 03 Aug 2004 13:48:47 -0700

This subroutine loops until a key is pressed, then loads its ASCII value into the accumulator. It is not dependant upon the Apple I's ROM. KbdRdy and Kbd are in the 6821.