Briel Computers

replica 1

replica 1 tenth anniversary edition

by on Nov.28, 2013, under replica 1

R110As previously mentioned in A2central.com the new replica 1 tenth anniversary edition is here. It’s hard to believe it has been 10 years since the replica 1 was created. In celebration of 10 years of kits, we have a limited edition replica 1 ten board. The new design is our sleekest and most modern design ever. The mini USB interface is not only a power source, but has a built in USB to serial interface allowing you to have a virtual COMM port on your PC. You can run your entire replica 1 from a USB port on your PC or from a USB power supply.R110 kit

The new replica 1 ten limited edition has a unique red color distinguishing it from prior versions. As such, we are limiting it to only 50 hand serial numbered units. Why 50? Well, that is the number of apple 1 computers believed to still be in existence. In order to maintain an economical kit with today’s rising component prices, we found ways to reduce components and made some hard choices too. Gone is the ATX power supply option along with the 40 pin replica 1 header, however, there will be ways to get these features as needed. Don’t have a USB power supply, we now offer a universal USB power supply R110 DIAGRAM

The new design allowed us to eliminate the 1MHz oscillator and now the Parallax Propeller controller generates the system clock. We added a larger EPROM so you can now select between the original BASIC or the new Applesoft lite. We were also able to reduce chip count using the Propeller to handle critical I/O glue logic processing.  All these changes makes it possible to not only maintain the price, but also makes a smaller, more efficient board.

Preordering is over, orders are being filled.

replica 1ten limited edition kit $149

replica 1ten limited edition assembled and tested $199

replica 1ten universal power supply and cable $19

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replica 1

by on Apr.03, 2010, under replica 1

The replica 1 is a functional clone of the apple 1 computer created by Steve Wozniak in 1976. This was the computer that Steve Jobs and Woz created to start Apple Computers in 1976. The latest version of the replica 1 is labeled TE for Third Edition. The replica 1 functions exactly like the apple 1 with many of the same components like a 6502 CPU and 6821 PIA. It comes with 32K RAM and 8K EEPROM. Addtional features like a ps/2 port, serial, ATX power connector and DC wall power supply connectors makes the replica 1 a fully functional computer system for todays collector or hobby builder. Available as a kit or assembled, the replica 1 is sure to give you hours of fun and excitement as you relive the glory days of computing. As a new feature, a full blown assembler called Krusader written by Ken Wessen was added to the EPROM space giving the user the ability to assemble 6502 programs right on the replica 1 without a PC. Write 6502 machine code programs using mnemonics instead of just programming hex code into the memory. This added programming tool makes the repica 1 not only a nostalgic computer but a great learning tool and introduction to microprocessors.

 

NOTE: THE REPLICA 1 IS CURRENTLY OUT OF STOCK

replica 1 TE improvements

  • Apple 1 compatible 44 pin slot
  • Apple 1 compatible 44 pin edge connector
  • Bread board area for hobby experiments
  • Elimination of jumpers
  • Improved video display using Parallax Propeller (works with most TV’s and monitors)
  • No need for Apple 1 slot adapter because Apple 1 slot now onboard as well as original replica 1 connector
  • User firmware updates. User can download firmware updates and install. No need to send in for new chips.

Add-on accessories

  • Compact Flash Adapter board
  • Slot 1 Expander (3 apple 1 expansion slot board)
  • Multi I/O board

Other information

  • Applesoft Lite Apple II Applesoft converted for the apple 1 and replica 1
  • Apple 1 ROMS These are the Actual Apple 1 nybble ROM images

SYSTEM INFORMATION:

This is a block diagram of the replica 1. The idea behind the project was to keep the design down to a minimum of parts and yet still allow full compatibility with the Apple 1 computer.

 This chart shows the memory map of the replica 1. The zero page is identical to the Apple 1, and the main program RAM is increased from 4K to 32K. The area occupied with BASIC was previously RAM on the Apple 1 but now is EEPROM so BASIC is resident in ROM at all times. This makes for faster loading of programs. Krusader also is resident in ROM. These do not change the compatibility of the replica 1 with the apple 1 but makes programming the replica 1 much easier than on the apple 1.

 

This is a diagram of the pinout of the expansion connector on the replica 1. It is different than the apple 1 in a few ways. First, it uses standard IDC 40 pin connector like on a IDE hard drive. Secondly, there are only 40 pins instead of 44 because some of the pins on the apple 1 were not needed to replicate the computer.

 

 

 

 

The multi I/O board is an all-in-one solution that gives the user 2 8 bit bi-directional ports with 4 handshaking lines, a true RS232 serial port with speeds up to 19,200 BAUD, and a 8K EEPROM programmer to store data or programs. There is a socket to add your own speakjet voice chip that works in conjunction with the serial port to make your replica 1 or apple 1 speak! The speakjet is not included but can be purchased here.

 

CFFA1

The CFFA1 is a add on storage card for the replica 1 and apple 1 computers. It uses compact flash cards to allow you to load/store programs onto your replica 1 or apple 1 computer. The menu driven card has the ability to format, create 1 level deep subdirectories, load, save basic and assembly language programs. This is the only storage card you need for the replica 1.

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