Tektronix Socket 7 TMS109A, Instruction Manual

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Acquiring and Viewing Disassembled Data
TMS 109A Socket 7 Microprocessor Support
2–13
Table 2–3: Cycle type definitions (Cont.)
Label Description
( RESERVED )
Reserved
( ALTERNATE BUS MASTER )
Bus is released to an Alternate Bus Master
( BACK OFF )
Back Off bus cycle
( UNKNOWN )
An invalid/unknown bus cycle
( BURST LINE FILL )*
Fetch cycle computed to be a burst fill. The data is fetched but
will not be executed, it is part of a 32 byte fetch. It will possibly
be stored in cache.
( BACKOFF/BURST FLUSH )*
Burst/Fetch cycle computed to be flushed due to a back off
( EXTENSION )*
Fetch cycle computed to be an opcode extension
( FLUSH )*
Fetch cycle computed to be flushed
( DUAL FETCH )
Nondisassembled fetch cycle from the Dual processor
( PRIMARY FETCH )
Nondisassembled fetch cycle from the Primary processor
* Computed cycle types.