IP2K Architecture Documentation

DISCLAIMER: This documentation is derived from the cgen cpu description of this architecture, and does not represent official documentation of the chip maker.

In cgen-parlance, an architecture consists of machines and models. A `machine' is the specification of a variant of the architecture, and a `model' is the implementation of that specification. Typically there is a one-to-one correspondance between machine and model. The distinction allows for separation of what application programs see (the machine), and how to tune for the chip (what the compiler sees).
A "cpu family" is a cgen concoction to help organize the generated code. Chip variants that are quite dissimilar can be treated separately by the generated code even though they're both members of the same architecture.

IP2K Architecture

This section describes various things about the cgen description of the IP2K architecture. Familiarity with cgen cpu descriptions is assumed.

Bit number orientation (arch.lsb0?): lsb = 0

ISA description

CPU Families

Machine variants

ip2022 - Ubicom IP2022

ip2022ext - Ubicom IP2022 extended

Model variants

ip2k - VPE 2xxx


h-cbit - carry bit

h-dcbit - digit-carry bit

h-pabits - page bits

h-pc - program counter

h-registers - all addressable registers

h-spr - special-purpose registers

h-stack - hardware stack

h-zbit - zero bit

Assembler supplemental

This documentation was machine generated from the cgen cpu description files for this architecture.