Mercurial > hg > Members > kono > nitros9-code

view level1/modules/nil.asm @ 3246:be3446f758ca

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Updated dwread.asm and dwwrite.asm so that the 6551 routines could have specially defined flags so that some of the addresses could be overridden by the make files if needed.
author David Ladd <drencor-xeen@users.sourceforge.net>
date Sun, 11 Mar 2018 01:30:30 -0600
parents 710da4efaaee
children
line wrap: on
line source

********************************************************************
* Nil - VRN (VIRQ/RAM/Nil driver) device descriptor
*
* $Id$
*
* Edt/Rev  YYYY/MM/DD  Modified by
* Comment
* ------------------------------------------------------------------

         nam   Nil
         ttl   VRN (VIRQ/RAM/Nil driver) device descriptor

         ifp1  
         use   defsfile
         endc  

Edtn     equ   1
rev      equ   0

         mod   ModSize,DvcNam,Devic+Objct,ReEnt+rev,MgrNam,DrvNam

         fcb   UPDAT.     access mode(s)
         fcb   HW.Page    hardware page
         fdb   $FF00      hardware port
         fcb   OptSize
OptStart fcb   DT.SCF
OptSize  equ   *-OptStart
MgrNam   fcs   "SCF"
DrvNam   fcs   "VRN"
DvcNam   fcs   "Nil"
         fcb   Edtn

         emod  
ModSize  equ   *
         end