?? rxdosini.asm
字號:
TITLE 'INI - RxDOS Initialize'
PAGE 59, 132
.LALL
;''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';
; INI - RxDOS Initialize ;
;...............................................................;
;''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';
; Real Time Dos ;
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -;
; ;
; This material was created as a published version of a DOS ;
; equivalent product. This program logically functions in ;
; the same way as MSDOS functions and it is internal data ;
; structure compliant with MSDOS 6.0 ;
; ;
; This product is distributed AS IS and contains no warranty ;
; whatsoever, including warranty of merchantability or ;
; fitness for a particular purpose. ;
; ;
; ;
; (c) Copyright 1990, 1997. Api Software and Mike Podanoffsky ;
; All Rights Reserved Worldwide. ;
; ;
; This product is protected under copyright laws and may not ;
; be reproduced in whole or in part, in any form or media, ;
; included but not limited to source listing, facsimile, data ;
; transmission, cd-rom, or floppy disk without the expressed ;
; written consent of the author. ;
; ;
; License for distribution for commercial use or resale ;
; required from: ;
; ;
; Api Software ;
; 12 South Walker Street ;
; Lowell, MA 01851 ;
; ;
; internet: mikep@world.std.com ;
; ;
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -;
; Compile with MASM 5.1 ;
;...............................................................;
include rxdosmac.asm
include rxdosdef.asm
RxDOS SEGMENT PUBLIC 'CODE'
assume cs:RxDOS, ds:RxDOS, es:RxDOS, ss:RxDOS
;''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';
; INI - RxDOS Initialize ;
;...............................................................;
public RxDOS_initialize
public RxDOS_LineEditorBuffers
public LogTraceBlockDevRequest
public LogTraceBlockDevReturn
public LogTraceCharDevRequest
public LogTraceCharDevReturn
public LogTraceInt21Calls
extrn _RxDOS_bNumBlockDev : byte
extrn _RxDOS_BufferList : near
extrn _RxDOS_CurrentDrive : byte
extrn _RxDOS_BootDrive : byte
extrn _RxDOS_CommandShell : near
extrn _RxDOS_Buffers : dword
extrn _RxDOS_bLastDrive : byte
extrn _RxDOS_bSwitchChar : byte
extrn _RxDOS_bCtrlBreakCheck : byte
extrn _RxDOS_MaxMemory : word
extrn _RxDOS_NULLDev : dword
extrn _RxDOS_pCDS : dword
extrn _RxDOS_pDPB : dword
extrn _RxDOS_pFT : dword
extrn _RxDOS_pStartMemBlock : word
extrn _RxDOS_CurrentSeg : word
extrn _RxDOS_SharedBuffer : near
extrn _RxDOS_pDTA : near
extrn _RxDOS_CurrentPSP : near
extrn _RxDOS_pCONdriver : near
extrn _RxDOS_pCLOCKdriver : near
extrn _RxDOS_UserCodePage : near
extrn _RxDOS_SystemCodePage : near
extrn _RxDOS_CurrCountryInfo : near
extrn _RetCallersStackFrame : near
extrn RxDOS_StackTop : near
extrn RxDOS_StackTemp : near
extrn RxDOS_start : near
extrn _CallDOS : far
extrn _Interrupt_20 : near
extrn _Interrupt_21 : near
extrn _Interrupt_23 : near
extrn _Interrupt_24 : near
extrn _Interrupt_25 : near
extrn _Interrupt_26 : near
extrn _Interrupt_27 : near
extrn _Interrupt_28 : near
extrn _Interrupt_2a : near
extrn _Interrupt_2f : near
extrn _IRet : near
extrn maxBlockDevices : near
extrn FindAvailableSFTHandle : near
extrn checkforDeviceType : near
extrn checkforDeviceName : near
extrn stdDeviceAssignTable : near
extrn scanDirectory : near
extrn initdiskAccess : near
extrn lowerCase : near
extrn upperCase : near
extrn CopyString : near
extrn readLine : near
extrn _initializeMemoryBlock : near
extrn SDAExtendedSwapArea : near
extrn initReqBlock : near
extrn RxDOS_USA_DefaultUpperCaseFunction : far
; extrn msgUnknownCommandinConfig : near
; extrn _RxDOS_ConfigKeywords : near
;''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';
; Line Editor Buffer Pool ;
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -;
; ;
; Init code space is used to hold interim buffers. ;
; ;
; ;
;...............................................................;
RxDOS_LineEditorBuffers dw ( RxDOS_EndOfInitCode - $ ) / sizeLINEEDITOR_BUFFERPOOL
;''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';
; CONFIG Statement Types ;
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -;
; ;
; WARNING: These values cannot be changed without also ;
; changing the dispatch table. ;
; ;
;...............................................................;
CONFIGTYPE_ENDOFARGS equ 0000h ; last entry
CONFIGTYPE_DOS equ 0001h ; dos = umb, high
CONFIGTYPE_NUMLOCK equ 0002h ; numlock = on | off
CONFIGTYPE_BREAK equ 0003h ; break = on | off
CONFIGTYPE_SET equ 0004h ; set
CONFIGTYPE_COUNTRY equ 0005h ; contry =
CONFIGTYPE_DEVICE equ 0006h ; device devicename [ options ]
CONFIGTYPE_DEVICEHIGH equ 0007h ; devicehigh devicename [ options ]
CONFIGTYPE_DRIVPARAM equ 0008h ; driveparam
CONFIGTYPE_MULTITRACK equ 0009h ; multitrack
CONFIGTYPE_SWITCHES equ 0010h ; switches
CONFIGTYPE_BUFFERS equ 0011h ; buffers =
CONFIGTYPE_FILES equ 0012h ; files =
CONFIGTYPE_FCBS equ 0013h ; fcbs = x [, y ]
CONFIGTYPE_LASTDRIVE equ 0014h ; lastdrive = x
CONFIGTYPE_SHELL equ 0015h ; shell specifypath
CONFIGTYPE_STACKS equ 0016h ; stacks
CONFIGTYPE_INSTALL equ 0017h ; install progname
CONFIGTYPE_INSTALLHIGH equ 0018h ; installhigh progname
CONFIGTYPE_MENUDEFAULT equ 0019h ; blockname [, timeout ]
CONFIGTYPE_MENUITEM equ 001Ah ; itemname [, text ]
CONFIGTYPE_MENUCOLOR equ 001Bh ; x [, y]
CONFIGTYPE_SUBMENU equ 001Ch ; itemname [, text ]
CONFIGTYPE_INCLUDE equ 001Dh ; itemname
CONFIGTYPE_MENUBLOCK equ 001Eh ; [...]
CONFIGTYPE_SWITCHCHAR equ 0020h ; char
CONFIGTYPE_COMMENTS equ 0021h ; comments
CONFIGTYPE_REM equ 0022h ; remarks
;''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';
; CONFIG Flags And Options ;
;...............................................................;
CONFIGFLAG_ENABLED equ 0001h
CONFIGFLAG_PROCESSED equ 0002h
;''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';
; CONFIGSTMT structure ;
;...............................................................;
CONFIGSTMT struc
cStmtType dw ? ; config statement type
cStmtName db ? ; statement starts here
CONFIGSTMT ends
;''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';
; CONFIGLINE Buffer ;
;...............................................................;
CONFIGLINE struc
configType dw ? ; config statement type
configLength dw ? ; config line length
configFlags dw ? ; config statement line number
configLineNumber dw ? ; config statement line number
configStatement db ? ; statement starts here
CONFIGLINE ends
;''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''';
; Config File Processing ;
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -;
; ;
; This module reads the entire Config.sys file from a par- ;
; tially initialized system. It expects minimally buffers, ;
; CDS, and other DOS data structures. Config processing ;
; happens in two phases: pass one gathers facts and pass two ;
; reconfigures data structures and loads drivers. ;
; ;
; Returns: ;
; ds/es both will point to ss ;
; ax current drive ;
;...............................................................;
configProcessing:
Entry
ddef _configStatements, es, di
ddef _configNextLine, es, di
def _comment , ';' ; default comment character
def _charsread
def _linenumber , 0000
def _dosFlags, 0000
defbytes _diskAccess, sizeDISKACCESS
defbytes _linebuffer, 255
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
; find/ open config.sys
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
setDS cs
setES cs
xor dx, dx
mov al, byte ptr [ _RxDOS_CurrentDrive ] ; startup drive
mov di, offset _RxDOS_ConfigFile ; search config file
call scanDirectory ; open config.sys
ifc configProcessing_Return ; if none found -->
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
; find/ open config.sys
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
push word ptr es:[ deFileSize. _low ][ si ]
push word ptr es:[ deFileSize. _high ][ si ]
setES ss
lea bx, _diskAccess [ bp ] ; build access control block
call initdiskAccess ; [ax] is drive, [dx] is cluster
pop word ptr ss:[ diskAcFileSize. _high ][ bx ]
pop word ptr ss:[ diskAcFileSize. _low ][ bx ]
configProcessing_12:
getdarg es, di, _configNextLine
mov word ptr es:[ configType ][ di ], CONFIGTYPE_ENDOFARGS
mov word ptr es:[ configLength ][ di ], 0000
setES ss
mov cx, 254
lea di, offset _linebuffer [ bp ]
lea bx, _diskAccess [ bp ] ; build access control block
call readLine ; read a line
ifz configProcessing_36 ; at end, reconfigure system -->
inc word ptr [ _linenumber ][ bp ] ; lines read
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
; strip trailing newline
;- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
; lea di, offset _linebuffer [ bp - 1 ]
; add di, cx
; cmp byte ptr ss:[ di ], 0Ah ; trailing newline?
; jne short configProcessing_14 ; no -->
; mov byte ptr ss:[ di ], 0 ; change to null
; dec cx
configProcessing_14:
lea di, offset _linebuffer [ bp ]
getarg ax, _comment ; parse out comments
call configRemoveComments ; remove comments
jz configProcessing_12 ; if nothing left on line -->
mov word ptr [ _charsread ][ bp ], cx ; characters read
setES ss
cmp byte ptr ss:[ di ], ':' ; comment line ?
jz configProcessing_12 ; yes, ignore -->
cmp byte ptr ss:[ di ], '[' ; block item specifier ?
jz configProcessing_16 ; yes -->
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