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Added new routine to dwread.asm and dwwrite.asm for using the SY6551 chips. Added new option to the becker port routines so the base address can be changed during build time from makefile. This should allow for setting building a optional module for use with the ESP8266-01 WiFi module on Ed Snider's analog board that is used with the CoCo3FPGA Project.
author David Ladd <drencor-xeen@users.sourceforge.net>
date Thu, 08 Mar 2018 21:36:34 -0600
parents db97356e3648
children
line wrap: on
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               IFNE      PIPE.D-1

PIPE.D         SET       1

********************************************************************
* PipeDefs - Pipe File Manager Definitions
*
* $Id$
*
* Edt/Rev  YYYY/MM/DD  Modified by
* Comment
* ------------------------------------------------------------------
*          1988/12/03  Chris J. Burke
* Coded from new PIPEMAN comments.

               NAM       PipeDefs
               TTL       Pipe File Manager Definitions

*
*   IOMan equates duplicated for PipeMan use
*

NPATHS         SET       16                  ;Maximum local paths per task -- must match IOMan
NameMax        SET       29                  ;Maximum length of a file name

*
*   Device Driver Static Storage Layout
*
               ORG       V.User
V.List         RMB       2                   ;Pointer to 1st pipe's pipe buffer
PManMem        EQU       .                   ;Device driver memory (drive table equivalent)

*
*   Pipe Buffer Data Structure
*
               ORG       0
PP.PD          RMB       2                   ;Pointer to shared path descriptor
PP.Next        RMB       2                   ;Pointer to next pipe buffer in system map
PP.Prev        RMB       2                   ;Pointer to previous pipe buffer in system map
PP.Rsrv        RMB       2                   ;Reserved
PP.Data        EQU       .                   ;Data buffer begins at this offset

*
*   Unique Path Descriptor Variables
*
               ORG       PD.FST
*** PP.Read must have bit 4 clear; PP.Writ must be PP.Read XOR 4
PD.Read        EQU       .
PD.RPID        RMB       1                   ;Process ID of reader waiting on signal
PD.RCT         RMB       1                   ;Number of blocked readers
PD.RSIG        RMB       1                   ;Signal to send reader
PD.REOR        RMB       1                   ;Read EOR character
PD.Writ        EQU       .
PD.WPID        RMB       1                   ;Process ID of writer waiting on signal
PD.WCT         RMB       1                   ;Number of blocked writers
PD.WSIG        RMB       1                   ;Signal to send writer
PD.WEOR        RMB       1                   ;Write EOR character (dummy)
*** End of special section
PD.End         RMB       2                   ;Pointer to end of pipe buffer
PD.NxtI        RMB       2                   ;Next in pointer
PD.NxtO        RMB       2                   ;Next out pointer
PD.RFlg        RMB       1                   ;"Ready" flag
PD.Wrtn        RMB       1                   ;"Written" flag
PD.BCnt        RMB       2                   ;# queue elements currently bufered
PD.Own         RMB       1                   ;Process ID of pipe original creator
PD.Keep        RMB       1                   ;Non-zero if pipe has been kept open artificailly
PD.QSiz        RMB       2                   ;Max. elements in queue (copied from OPT section)

*
*   Path descriptor option section
*
*   Note that PD.Name overlaps with the last byte of PD.ECnt.
*   PD.ECnt is copied to PD.QSiz as part of OPEN or CREATE,
*   to make room for the pipe name.
*
               ORG       (PD.OPT+1)
PD.ESiz        RMB       1                   ;Size of each queue element
PD.ECnt        RMB       2                   ;Max. elements in queue (initial position)
               IFGT      Level-1
               ORG       (PD.OPT+3)
PD.Name        RMB       NameMax
               ENDC      

*
*   Device Descriptor definitions
*
IT.PDC         EQU       $12                 ;Pipe device class (like IT.DTP, IT.DVC)
               ORG       IT.PDC
               RMB       1                   ;Leave room for device class
IT.ESiz        RMB       1                   ;Size of each queue element
IT.ECnt        RMB       2                   ;Max. elements in queue (initial position)

*   End of pipe.d

               ENDC