janus.i
-
software conventions for janus.i
Copyright
0
1986,
Commodore-Amiga Inc., All rights reserved
IFND EXEC-TY PES-I
INCLUDE "exec/types.i"
EN DC EXEC-TY PES-I
l
FN
D
EXEC-LIBRARIES-I
INCLUDE "exec1libraries.i"
ENDC EXEC-LIBRARIES-I
IFND EXEC-INTERRUPTS-I
INCLUDE "exec/interrupts.i"
ENDC EXEC-INTERRUPTS-I
;
JanusResource
-
an entity which keeps track of the reset state of
the
8088.
If this resource does not exist, it is assumed the
8088
can
be reset.
STRUCTURE JanusResource,LN-SIZE
APTR jr-BoardAddress
;
address of JANUS board
UBYTE
jr-Reset
;
non-zero indicates
8088
is held reset
LABEL
JanusResource-SIZEOF
;
As a coding convenience, we assume a maximum of 32 handlers.
;
People should avoid using this in their code, because we want to
;
be able to relax this constraint in the future. All the standard
;
commands' syntactically support any number of interrupts, but
;
the internals are limited to 32.
MAXHANDLER EQU 32
;
JanusAmiga
-
amiga specific data structures forjanus project:
STRUCTURE JanusAmiga,LIB-SIZE
ULONG ja-IntReq
;
software copy of out-
standing requests
ULONG
jalntEna
;
software copy of enabled
interrupts
APTR
ja-ParamMem
;
ptr to (word arranged)
param mem
APTR
ja-IoBase
;
ptr to base of io register
region
APTR
jaExpanBase
;
ptr to start of shared
memory
APTR
ja-ExecBase
;
ptr to exec library
APTR
ja-DOSBase
;
ptr to DOS library
APTR
ja-Seg List
;
holds a pointer to our
code segment
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