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50 lines
1.8 KiB
Plaintext
50 lines
1.8 KiB
Plaintext
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;*****************************************************
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;*
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;* RSP.DEF - Describes the relative offsets of
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;* data items in the Data Segment of a
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;* Resident System Process. GENSYS
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;* links all RSP's together through the
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;* rsp_link field (segment address ptrs).
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;* Each RSP is started up as System
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;* Initialization.
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;*
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;* Format: +---+---+---+---+---+---+---+---+
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;* 00 | link |sdatvar|ncp| reserved |
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;* +---+---+---+---+---+---+---+---+
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;* 08 | reserved | CS |reserve|
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;* +---+---+---+---+---+---+---+---+
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;* 10 | Process Descriptor |
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;* +---+---+---+---+---+---+---+---+
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;* 40 | User Data Area |
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;* +---+---+---+---+---+---+---+---+
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;* E0 | RSP data area |
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;* +---+---+---+---+---+---+---+---+
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;*
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;* link - GENSYS links all RSP's through this.
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;* At system init, this value is filled
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;* with the SYSDAT segment address
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;* sdatvar - if non-zero, this is a variable address
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;* in the SYSDAT area which indicates the
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;* a value to put into ncopies (ncp).
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;* ncp - Number of copies - Used by GENSYS to determine
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;* how many copies of this RSP to generate.
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;* This number is modified to be the specific
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;* copy that was generated.
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;* CS - Used by GENSYS to determine where a shared
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;* code segment may exist in multiple copy
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;* RSPs.
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;*
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;*****************************************************
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rsp_top equ 0
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rsp_link equ word ptr rsp_top
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rsp_sysdat equ rsp_link
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rsp_sdatvar equ word ptr rsp_link + word
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rsp_ncopies equ byte ptr rsp_sdatvar + word
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rsp_reserved equ rsp_ncopies + byte
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rsp_md equ 08h
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rsp_pd equ 10h
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rsp_uda equ ((rsp_pd+pdlen+0fh)/10h)*10h
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rsp_bottom equ rsp_uda + ulen
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