Merge pull request #60 from ecm-pushbx/ecm-2026-04m

ecm 2026-04m

Author: shidel

source/Interrupt List/INT 21 DOS Function Calls/INT 214402SF00 Memory Managers GET API ENTRY POINT.txt

@@ -21,7 +21,8 @@ Notes:	this function is supported by Microsoft EMM386.EXE v4.45+ and
 	  "COMPAQ EXPANDED MEMORY MANAGER 386" at offset 14h in the INT 67
 	  handler's segment; if present, the word at offset 12h contains the
 	  offset of the API entry point
-SeeAlso: AX=4402h/SF=01h,AX=4402h/SF=02h,AX=4402h"EMM386",INT 67/AH=3Fh
+SeeAlso: AX=4402h/SF=01h,AX=4402h/SF=02h,AX=4402h"Microsoft EMM386"
+SeeAlso: INT 67/AH=3Fh
 
 Format of memory manager API entry point record:
 Offset	Size	Description	(Table 01512)

source/Interrupt List/INT 21 DOS Function Calls/INT 214402SF01 Memory Managers GET EMM IMPORT STRUCTURE ADDRESS.txt

@@ -19,7 +19,7 @@ Notes:	this function is supported by Microsoft EMM386.EXE v4.45+,
 	  as it starts up
 	for QEMM-386, this call always returns an error if Windows3 support
 	  has been disabled with the NW3 switch
-SeeAlso: AX=4402h/SF=00h,AX=4402h"EMM386",INT 2F/AX=D201h/BX=5145h
+SeeAlso: AX=4402h/SF=00h,AX=4402h"Microsoft EMM386",INT 2F/AX=D201h/BX=5145h
 SeeAlso: INT 67/AH=3Fh
 
 Format of EMM import structure record:

source/Interrupt List/INT 21 DOS Function Calls/INT 214402SF02 Memory Managers GET MEMORY MANAGER VERSION.txt

@@ -16,7 +16,7 @@ Return: CF clear if successful
 	    AX = error code (01h,05h,06h,0Dh) (see #01680 at AH=59h/BX=0000h)
 Note:	this function is supported by Microsoft EMM386.EXE v4.45+ and
 	  CEMM v5.10+, and is intended for use by MS Windows as it starts up
-SeeAlso: AX=4402h/SF=00h,AX=4402h"EMM386",INT 67/AH=3Fh
+SeeAlso: AX=4402h/SF=00h,AX=4402h"Microsoft EMM386",INT 67/AH=3Fh
 
 Format of memory manager version:
 Offset	Size	Description	(Table 01520)

source/Interrupt List/INT 21 DOS Function Calls/INT 216C00 DOS 40 EXTENDED OPENCREATE.txt

@@ -20,6 +20,7 @@ INT 21 - DOS 4.0+ - EXTENDED OPEN/CREATE
 	DL = action if file exists/does not exist (see #01770)
 	DH = 00h (reserved)
 	DS:SI -> ASCIZ file name
+	CF should be set on entry for better compatibility
 Return: CF set on error
 	   AX = error code (see #01680 at AH=59h/BX=0000h)
 	CF unchanged, AL = 00h as DOS v1 style error (AX = 6C00h)
@@ -39,6 +40,9 @@ Notes:	the PC LAN Program only supports existence actions (in DL) of 01h,
 	DOS v1 style error sets AL = 00h (thus AX = 6C00h) but leaves CF
 	  unchanged so it is good practice to initialise CF set before the
 	  int 21h call
+	MS-DOS v4.01 and lDOS accept bit 0 in DH set, all other bits must be
+	  zero or an error 0001h is generated
+	MS-DOS v4.01 and lDOS accept any value in AL
 BUG:	this function has bugs (at least in DOS 5.0 and 6.2) when used with
 	  drives handled via the network redirector (INT 2F/AX=112Eh):
 	    - CX (attribute) is not passed to the redirector if DL=11h,
@@ -72,4 +76,3 @@ Bit(s)	Description	(Table 01770)
 	0000 fail
 	0001 open
 	0010 replace/open
-

source/Interrupt List/INT 67 reserved for user interrupt LIM EMS multiple purposes/INT 67FFA5 Microsoft EMM386EXE v420 INSTALLATION CHECK.txt

@@ -15,7 +15,7 @@ Notes:	this call is available even if EMM386 is not providing EMS
 	  "MICROSOFT EXPANDED MEMORY MANAGER 386" at offset 14h in the INT 67
 	  handler's segment; the word immediately preceding this string
 	  contains the offset of the API entry point
-SeeAlso: AH=3Fh,AX=FFA5h/BX=4345h,INT 21/AX=4402h"EMM386.EXE"
+SeeAlso: AH=3Fh,AX=FFA5h/BX=4345h,INT 21/AX=4402h"Microsoft EMM386"
 
 (Table 03666)
 Call EMM386.EXE API entry point with:
@@ -41,4 +41,4 @@ Call EMM386.EXE API entry point with:
 	AH = 05h print available report
 		 (the one shown when running EMM386 from the DOS prompt)
 SeeAlso: #01513 at INT 21/AX=4402h/SF=02h,#02617 at INT 2F/AX=12FFh/BX=0106h
-
+

source/Interrupt List/INT 67 reserved for user interrupt LIM EMS multiple purposes/INT 67FFA5BX4345 Compaq CEMM v510 PRIVATE API.txt

@@ -20,6 +20,6 @@ INT 67 U - Compaq CEMM v5.10+ - PRIVATE API
 Return: AH = 84h
 	AL = status (84h = error, FFh = success)
 Note:	if BX <> 4345h or DX > 0004h on entry, CEMM behaves identically to
-	  Microsoft's EMM386 (see AX=FFA5h"EMM386")
-SeeAlso: AX=FFA5h"EMM386",#01513 at INT 21/AX=4402h/SF=02h,#03666
+	  Microsoft's EMM386 (see AX=FFA5h"Microsoft EMM386")
+SeeAlso: AX=FFA5h"Microsoft EMM386",#01513 at INT 21/AX=4402h/SF=02h,#03666