AMX 68000 User Manual download pdf (Page 63)

AMX 68000 Target Guide

DAK

rev7 B-1

Appendix B. AMX 68000 Service Procedures

B.1 Summary of Services

AMX 68000 provides a collection of target dependent AMX service procedures for use

with the M68000 processor and compatibles and the C compilers which support them.

These procedures are summarized below.

Interrupt Control (class

ksi)

cjksitrap Install a task trap handler

cjksivtp Fetch pointer to the AMX Vector Table

cjksivtrd Read an entry from the AMX Vector Table

cjksivtwr Write an entry into the AMX Vector Table

cjksivtx Exchange an entry in the AMX Vector Table

Processor and C Interface Procedures (class

cf)

In addition to the services provided by AMX and its managers, the AMX Library

includes several C procedures of a general nature which simplify application

programming in real-time systems on your target processor.

cjcfccsetup Setup C environment

cjcfdi Disable interrupts at priority level 6

cjcfei Enable interrupts at priority level 0

cjcfflagrd Read the processor status register (SR)

cjcfflagwr Write to the processor status register (SR)

cjcfhwdelay Delay n microseconds

cjcfhwbcache Flush and enable/disable data and instruction caches

cjcfhwdcache Flush and enable/disable data cache

cjcfhwicache Flush and enable/disable instruction cache

cjcfin8 Read an 8-bit input port

cjcfin16 Read a 16-bit input port

cjcfin32 Read a 32-bit input port

cjcfjlong Long jump to a mark set by cjcfjset

cjcfjset

Set a mark for a subsequent long jump by cjcfjlong

cjcfmcopy

Copy a block of memory

cjcfmset Set (fill) a block of memory

cjcfout8 Write an 8-bit value to an output port

cjcfout16 Write a 16-bit value to an output port

cjcfout32 Write a 32-bit value to an output port

cjcfstkjmp Switch stacks and jump to a new procedure

cjcftag Convert a string to an AMX tag value

cjcfvol8 Read a volatile 8-bit variable

cjcfvol16 Read a volatile 16-bit variable

cjcfvol32 Read a volatile 32-bit variable

cjcfvolpntr Read a volatile pointer variable

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