Personal Computer User Manual

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IOT (Input/Output Teach).......................................................................3-11
IOC (Input/Output Control) ...................................................................3-11
BO (Bootstrap Operating System)...........................................................3-11
BH (Bootstrap and Halt)...........................................................................3-11
Disk I/O via 197Bug System Calls..........................................................3-12
Default 197Bug Controller and Device Parameters.....................................3-13
Disk I/O Error Codes.......................................................................................3-13
Network I/O Support......................................................................................3-13
Physical Layer Manager Ethernet Driver...............................................3-14
UDP/IP Protocol Modules.......................................................................3-14
RARP/ARP Protocol Modules................................................................3-14
BOOTP Protocol Module..........................................................................3-14
TFTP Protocol Module..............................................................................3-14
Network Boot Control Module................................................................3-15
Network I/O Error Codes........................................................................3-15
Multiprocessor Support ..........................................................................................3-15
Multiprocessor Control Register (MPCR) Method......................................3-15
GCSR Method....................................................................................................3-17
Diagnostic Facilities.................................................................................................3-17
CHAPTER 4 USING THE 197Bug DEBUGGER
Entering Debugger Command Lines......................................................................4-1
Syntactic Variables..............................................................................................4-2
Expression as a Parameter..........................................................................4-2
Address as a Parameter ..............................................................................4-4
Address Formats..........................................................................................4-4
Offset Registers............................................................................................4-4
Port Numbers......................................................................................................4-5
Entering and Debugging Programs.........................................................................4-5
Calling System Utilities From User Programs.......................................................4-6
Preserving The Debugger Operating Environment..............................................4-6
197Bug Vector Table and Workspace................................................................4-6
Hardware Functions...........................................................................................4-6
Exception Vectors Used by 197Bug..................................................................4-6
CPU/MPU Registers..........................................................................................4-7
Floating Point Support..............................................................................................4-7
Single Precision Real...........................................................................................4-8
Double Precision Real.........................................................................................4-8
Scientific Notation...............................................................................................4-8
197Bug Debugger Command Set.............................................................................4-9