Video Setup: Part 2 – Butterfield, Jim

Compute!'s Gazette Issue 43, Volume 5, No. 1, January 1987, p. 78

Last month, we looked at a program that provides Commodore 64 users with all th ... he 128's memory banking.

RAM Expansion for the Commodore 128 – Butterfield, Jim

Compute!'s Gazette Issue 45, Volume 5, No. 3, March 1987, p. 74

Commodore's new RAM-expansion modules greatly increase the power of the 128. Al ... the 1750 RAM expansion.

Gameports: Joystick, Paddle, and Mouse – Butterfield, Jim

Compute!'s Gazette Issue 47, Volume 5, No. 5, May 1987, p. 90

In this article, Jim Butterfield discusses how Commodore 128 and 64 game contro ... ics tablets, and mouses.

BASIC CBM 8010 Modem Routines – Butterfield, Jim

Compute! Issue 7, Volume 2, No. 6, November 1980, p. 78

A short BASIC program enables chat-link communication over modem modem connect ... I system or another PET.

PET 4.0 ROM Routines – Butterfield, Jim

Compute! Issue 7, Volume 2, No. 6, November 1980, p. 88

Memory locations of PET/CBM 4.0 ROM routines.

BASIC 4.0 Memory Map – Butterfield, Jim

Compute! Issue 7, Volume 2, No. 6, November 1980, p. 92

Memory map of the PET/CBM BASIC 4.0 ROM, including detailed map of zero page.

Machine Language Addressing Modes – Butterfield, Jim

Compute! Issue 7, Volume 2, No. 6, November 1980, p. 98

Tutorial on the memory scope of each of the 6502's addressing modes.

Interfacing KIM/SYM/AIM/OSI with BASIC – Butterfield, Jim

Compute! Issue 7, Volume 2, No. 6, November 1980, p. 128

Writing BASIC/ML hybrid programs on the KIM-1.

Basically Useful BASIC: Financial Fuzzies – Butterfield, Jim

Compute! Issue 8, Volume 3, No. 1, January 1981, p. 22

Correcting floating-point rounding errors in BASIC.

Machine Language: Scanning the Stack – Butterfield, Jim

Compute! Issue 8, Volume 3, No. 1, January 1981, p. 102

Advanced uses for the 6502 stack in machine language. Includes source code examples.

Review: Disk-O-Pro – Butterfield, Jim

Compute! Issue 8, Volume 3, No. 1, January 1981, p. 112

Review of Disk-O-Pro, an upgrade ROM from Skyles Electric Works.

The IEEE Bus – Standing Room Only? – Butterfield, Jim

Compute! Issue 8, Volume 3, No. 1, January 1981, p. 123

An examination of some shortcomings of the IEEE I/O bus on the PET/CBM.