Limitations, Restrictions - HP H8/3003 User Manual

Limitations,
Restrictions
Foreground Monitor
DMA Support
Internal RAM of
H8/3005
Watch Dog Timer in
Background
Monitor Break at
Sleep/Standby Mode
Hardware Standby
Mode
Interrupts in
Background Cycles
Reset Output Enable
Foreground monitor is not supported for the H8/3003 emulator.
Direct memory access to the emulation by external DMAC is not
allowed.
When you emulate H8/3005 processor, you can't use address 0fef10h -
0ff00fh (mode 1) and 0ffef10h - 0fff00fh (mode 3) as internal RAM.
These area are worked as external 8bit 3state area.
Watch dog timer is suspended count up while the emulator is running
in background monitor.
When the emulator breaks into the background monitor, sleep or
software standby mode is released. Then, PC indicates next address of
"SLEEP" instruction.
Hardware standby mode is not supported for the H8/3003 emulator.
Hardware standby request from target system will give the emulator
reset signal.
The H8/3003 emulator does not accept any interrupts while in
background monitor. Such interrupts are suspended while running the
background monitor, and will occur when context is changed to
foreground.
The RSTOE (Reset output enable bit) is used to determine whether the
H8/3003 processor outputs reset signal when the processor is reset by
Bit
the watch dog timer. However, the H8/3003 emulator ignores the
configuration of the RSTOE, and works as it is configured with the
modify configuration command.
Introduction to the H8/3003 Emulator 1-9