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Another Apple 1? http://www.achatz.nl/

Submitted by bungalow _steve on August 7, 2006 - 6:54pm. Apple I

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Its a 8 Chip design. PCB siz

Submitted by franzachatz on August 9, 2006 - 8:32am.

Its a 8 Chip design.
PCB size 160mm x 100mm
There are two Memorymaps available.
With Map2 the RAM Block $6000 moves to $E000.
A very powerful embedded Assembler will be available soon:
http://www.xs4all.nl/~sbp/projects/apple1/apple1.htm

-------------------------------------
JumperMode=HIGH (Map1)
-------------------------------------

A15 A14 A13 A12

$0000 0 0 0 0 4K RAM
$1000 0 0 0 1 4K RAM
$2000 0 0 1 0 4K RAM
$3000 0 0 1 1 4K RAM
$4000 0 1 0 0 4K RAM
$5000 0 1 0 1 4K RAM
$6000 0 1 1 0 4K RAM
$7000 0 1 1 1 4K RAM
$8000 1 0 0 0 not used
$9000 1 0 0 1 not used
$A000 1 0 1 0 4K USER
$B000 1 0 1 1 4K USER
$C000 1 1 0 0 4K USER
$D000 1 1 0 1 PIA I/O Control
$E000 1 1 1 0 4k ROM BASIC
$F000 1 1 1 1 4K ROM WOZ-MON

--------------------------------------
JumperMode=LOW (Map2)
--------------------------------------

A15 A14 A13 A12

$0000 0 0 0 0 4K RAM
$1000 0 0 0 1 4K RAM
$2000 0 0 1 0 4K RAM
$3000 0 0 1 1 4K RAM
$4000 0 1 0 0 4K RAM
$5000 0 1 0 1 4K RAM
$6000 0 1 1 0 not used
$7000 0 1 1 1 4K RAM
$8000 1 0 0 0 not used
$9000 1 0 0 1 not used
$A000 1 0 1 0 4K USER
$B000 1 0 1 1 4K USER
$C000 1 1 0 0 4K USER
$D000 1 1 0 1 PIA I/O Control
$E000 1 1 1 0 4k RAM
$F000 1 1 1 1 4K ROM WOZ-MON

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It looks a lot like someone i

Submitted by logjam on August 9, 2006 - 10:25pm.

It looks a lot like someone is benefiting from Vince's work...

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Its different

Submitted by franzachatz on August 10, 2006 - 7:48am.

Vince knows about my design and Vince mailed
me some nice ideas but i dit it different.
By the way: the design arround the 6502/6821 and
the Monitor is from Steve Wozniak.
I did not use any source-code from Vince !!!

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Thats cool. The more product

Submitted by logjam on August 10, 2006 - 8:14pm.

Thats cool. The more products like this out there, the better. Smiling

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I agree. This isn't my replic

Submitted by vbriel on August 11, 2006 - 11:43am.

I agree. This isn't my replica 1, it is a basic 6502 system made compatible with the Apple 1 similar to the replica 1. Franz uses gals for glue logic, I chose traditional TTL for the learning experience.

What we have in common is ATMEL AVR's, but programming is different. I used assembler, Franz uses bascom. So, there is no copying going on. Good work on the replica. There needs to be simple 8 bit computer kits for people to build and learn from. The hobby is slowly drying up.

Vince

» replica 1 The Apple 1 replica and the new Micro-KIM!
brielcomputers.com

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Hi Vince, yes, you are rig

Submitted by franzachatz on August 11, 2006 - 5:02pm.

Hi Vince,

yes, you are right with your words "hobby is lowly drying up"
but this comes, because the kids are growing up with PC,s :-(
Very good news:
I am testing the embedded Apple 1 SB-Assembler, at this moment.
It looks great, and San Bergmans makes it available for running
on your machine, Vince.
I can run it in RAM at $E000 or in RAM $7000 or in ROM.
Therefore, it must be compatible with the A1 Replica and the A-ONE.

have a nice weekend
Franz

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