Viper RAM Expansion

     This is documentation for the Viper RAM Expansion by Alternative Engineering Corporation.

Loading and Saving in Vipersoft BASIC Loading and Saving in Vipersoft BASIC

     Lance Squire explains how to load and save at both 300-baud and 2000-baud... something that was completely left out of the Viper 1 and Extended BASIC Manual! (One Page, 2K)
Vipersoft with 2000-BAUD Interface Using the AstroBASIC 2000-BAUD Interface with Vipersoft BASIC

      This documentation discusses swapping AstroBASIC with Vipersoft BASIC loaded into RAM, either from a multicart, a cartridge created from an EPROM or from (probably the most common method) loading Vipersoft BASIC from a tape. This cartridge swap is done so that the AstroBASIC tape interface can be used to save or load to tape at the faster 2000-BAUD instead of requiring the much slower (and rarer!) 300-BAUD external interface. - (1 Page, 1KB)
Viper 1 and Extended BASIC Thumbnail Viper 1 and Extended BASIC Manual

     Manual with explanations of such features as the Auto Write Switch, Checksum Program Copy Cartridge Program, Copy Extended BASIC from Memory to Tape, Glossary of Computer Terms, Internal Dual Switchpaks for Memory Addressing and Bus Controls, Keyboard Interface, Loading Extended BASIC from Tape, Programmable Write Protect/Write Enable Circuit, Switched AC outlet, Troubleshooting, Installation, and Viper to Bally Interface Card. - (15 Pages, 20K)
Viper Boards (Schematics) Thumbnail Viper Boards (Schematics)

     Schematics created by Lance F. Squire's father. Lance, an owner of the Viper 1, uploaded these to the Bally Alley Discussion group on January 28, 2007. - (Five JPG images, 1.4MB)
Loading and Saving with Viper RAM Thumbnail Viper RAM (Loading and Saving Tips)

     A letter that George Moses wrote to Dick Houser on October 28, 1982 that gives brief directions on loading and saving with the Viper RAM expansion using AstroBASIC. - (1 page, 42K)
Vipersoft BASIC Instructions Transcribed (Part 1) Vipersoft BASIC Instructions Transcribed (Part 1)

     Lance Squire transcribed Part 1 of the ViperBASIC new system level commands. He does not have part 2... do you? (Four Page, 2K)