JPI

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Kenbak-1 Relative Jumps

Introduction to Kenbak-1 Relative Jumps Kenbak-1 Relative Jumps will jump to a location relative to the program counter. Really, there is no relative jump instruction. Therefore, if we require a relative jump we will do this with the JPI (Indirect Jump) instruction. The advantage of relative jumps is that we Read More »

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Kenbak-1 Jump and Mark (JMD)

Introduction to the Kenbak-1 Jump and Mark (JMD) Instruction The Kenbak-1 Jump and Mark (JMD) allows us to create “Subroutines” that we can use over and over again. Generally, we can use this for delay loops, common math conversions, or anything else we need to do more than once in Read More »

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