ZBasicRef - page 69 of 172

ZBasic Language Reference

ZX Microcontroller Family

ZX-24a, ZX-40a, and ZX-44a Registers

The pre-defined CPU registers for the ZX-24a, ZX40a and ZX-44a match those available on the

ATmega644 CPU and all are Byte values. Discussion of the use of these registers is beyond the scope

of this document. See the Atmel documentation for a full description. Also, be advised that modifying

some of these registers may severely alter the behavior of the control program, possibly even rendering it

CPU Registers for mega644-based ZX Models

The 16-bit registers for the mega644-based ZX models are shown in the table below.

ZX-24p, ZX-40p, ZX-44p, ZX-24n, ZX-40n and ZX-44n Registers

The pre-defined CPU registers for these devices match those available on the ATmega644P CPU and all

are Byte values. Discussion of the use of these registers is beyond the scope of this document. See the

Atmel documentation for a full description. Also, be advised that modifying some of these registers may

severely alter the behavior of the control program, possibly even rendering it inoperable.

CPU Registers for mega644P-based ZX Models

The 16-bit registers for the mega644-based ZX models are shown in the table below.