Fast Models Reference Manual - ARM Information Center

Peripheral and Interface Components
syncLevelPostInsnIORegister
Users write to this register for POST_INSN_LDST. Write-only.
syncLevelPostInsnIOUnregister
Users write this to unregister for POST_INSN_LDST. Write-only.
syncLevelPostInsnAllRegister
Users write this to register for POST_INSN_ALL. Write-only.
syncLevelPostInsnAllUnregister
Users write this to unregister for POST_INSN_ALL. Write-only.
The following registers are only provided for debugging purposes and visibility in the debugger,
and are usually not accessed by syncLevel users at all:
syncLevel
Current syncLevel. Read-only.
syncLevelSyncStateCount
User counter. Read-write (should be used read-only).
syncLevelPostInsnIOCount
User counter. Read-write (should be used read-only).
syncLevelPostInsnAllCount
User counter. Read-write (should be used read-only).
minSyncLevel
Same as min_sync_level parameter (see below). Read-write.
The *Register and *Unregister registers are intended to be used, that is, written, by syncLevel
users to register and unregister themselves. The value written is ignored and should be 0.
Changes to the syncLevel become effective at the next Stop event checkpoint. In addition, these
registers can be written any time before simulation is running, for example from the init()
simulation phase. The change then takes effect immediately when the simulation is run.
All other registers are only present to make the debugging of these mechanisms and their users
easier. The syncLevel enables you to see what kind of performance can currently be expected
from the model. You must treat access to these registers as read-only. Writing to them is
permitted, however, to allow debugging the syncLevel mechanisms.
These registers are not memory (or CPnn-) mapped anywhere, and are not accessible to target
programs.
In addition to this debug register interface, there is a CADI parameter that can influence the
syncLevel:
• min_sync_level (default=0, type=int, runtime=true)
This parameter enables you to control the minimum syncLevel by the CADI parameter
interface. This is not the intended primary interface to control the syncLevel because it does not
enable multiple independent syncLevel users to indicate their requirements to the simulator. It
is intended primarily for debugging purposes and for situations where a single global setting of
syncLevel is sufficient. Changes to this parameter at runtime are allowed and become effective
on the next Stop event checkpoint. Reading this parameter value returns the min_sync_level, not
the current syncLevel. This parameter is only an additional way of controlling the syncLevel
and controls the same mechanisms as the register interface.
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