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CPM OPERATING SYSTEMS/CPM 86/CONCURRENT/CCPM-86 3.1 SOURCE/D5/DISKHDR.EQU

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+
+;************************************************
+;*	Disk System Header Equate File		*
+;*	File name: diskhdr.equ			*
+;*	Last update: 11/10/83			*
+;************************************************
+
+;
+;  Read and Write disk parameter equates
+;
+;  At the disk read and write function entrys
+;   all disk I/O parameters are on the stack
+;   and the stack at these entrys appears as
+;   follows:
+;
+;           +-------+-------+
+;       +14 |  DRV  | MCNT  |   Drive and Multi sector count
+;           +-------+-------+
+;       +12 |     TRACK     |   Track number
+;           +-------+-------+
+;       +10 |    SECTOR     |   Physical sector number
+;           +-------+-------+
+;        +8 |    DMA_SEG    |   DMA segment 
+;           +-------+-------+
+;        +6 |    DMA_OFF    |   DMA offset
+;           +-------+-------+
+;        +4 |    RET_SEG    |   BDOS return segment
+;           +-------+-------+
+;        +2 |    RET_OFF    |   BDOS return offset
+;           +-------+-------+
+;      SP+0 |    RET_ADR    |   Local entry return address
+;           +-------+-------+
+;
+;  These parameters may be indexed and modifide
+;   directly on the stack and will be removed
+;   by the BDOS after the function is complete
+
+
+; These are the euates for the above pictured data structure
+
+DRIVE		equ	byte ptr 14[bp]
+MCNT		equ	byte ptr 15[bp]
+TRACK		equ	word ptr 12[bp]
+SECTOR		equ	word ptr 10[bp]
+DMASEG		equ	word ptr 8[bp]
+DMAOFF		equ	word ptr 6[bp]
+
+; These equates are for the DPH's
+
+xlt		equ	word ptr 0	; tranalation table offset in dph
+dpb		equ	word ptr 8	; disk parameter block offset in dph
+mf		equ	byte ptr 5	; disk specific media flag 
+
+; These equates are for the DPB's
+
+spt		equ	0		; sectors per track offset in dpb
+psh		equ	15		; physical shift factor offset in dpb
+
+
+; Retry equates
+
+RW_RECAL_COUNT	EQU	5		; Max number of recals
+RETRY_COUNT	EQU	10		; Max number retries
+
+; Path tracer equates
+
+PATH_ENTRY	EQU	word ptr 0	; Path counter when routine entered
+PATH_EXIT	EQU	word ptr 2	; Path counter when routine exited
+
+LAST_RETRY	EQU	word ptr 4	; Retry counter at last exit
+LAST_RETURN	EQU	word ptr 6	; Last returned value
+
+USE		EQU	word ptr 8	; number of time routine called
+RETRY_SUM	EQU	word ptr 10	; sum of all retry attempts
+RETRY1_SUM	EQU	word ptr 12	; sum of all retry attempts 
+RECAL_SUM	EQU	word ptr 14	; sum of all retry attempts
+
+PATH_RETRY_HIST	EQU	16		; length of above data structure
+
+
+
+
+