B.1 discussion of fixes and improvements – Jameco Electronics Rabbit 3000 User Manual
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Rabbit 3000 Microprocessor
B.1 Discussion of Fixes and Improvements
Table B-1 lists the bug fixes, improvements, and additions for the various revisions of the
Rabbit 3000.
Table B-1. Summary of Rabbit 3000 Improvements and Fixes
Description
Rabbit
3000
(IL1T/IZ1T)
Rabbit
3000A
(IL2T/IZ2T)
ID Registers for version/revision identification.
X
X
System/User mode.
X
Memory protection scheme.
X
Stack protection.
X
RAM segment relocation.
X
Secondary watchdog timer.
X
Multiply-add and multiply-subtract.
X
Variants of block move opcodes.
X
16-bit internal I/O address space.
X
External I/O interface enhancements.
X
Expanded low-power capability.
X
PWM improvements.
X
Quadrature decoder improvements.
X
Integrated Schmitt trigger for 32 kHz oscillator input.
X
Alternate output port connection for numerous peripherals.
X
Port A decode bug fix.
X
LDIR/LDDR with wait states bug fix.
X
Interrupt after I/O with short /CSx enabled bug fix.
X
IrDA bug fix.
X