MZ is back!HEADmain

1 files changed, 148 insertions, 0 deletions

diff --git a/v4.0/src/DEV/SMARTDRV/FL13.ASM b/v4.0/src/DEV/SMARTDRV/FL13.ASM
new file mode 100644
index 0000000..6ae1e44
--- /dev/null
+++ b/v4.0/src/DEV/SMARTDRV/FL13.ASM
@@ -0,0 +1,148 @@
+        TITLE   Assembler helper routines for FLUSH13
+
+PAGE    58,132
+
+
+memS    EQU     1               ; Small model
+?PLM    =       0               ; Standard 'C'
+?WIN    =       0               ; Not windows
+
+include cmacros.inc
+
+;extern int      IOCTLOpen(char *);
+;extern int      IOCTLWrite(int,char *,int);
+;extern int      IOCTLRead(int,status *,int);
+;extern int      IOCTLClose(int);
+
+sBegin  CODE
+
+assumes CS, CODE
+assumes DS, DATA
+
+;**     IOCTLOpen - Open the indicated device and make sure it's a device
+;
+;  ENTRY:
+;       Pointer to name of device
+;  EXIT:
+;       AX = -1 if error, device not opened
+;       else AX = handle of open device
+;  USES:
+;       Standard 'C'
+;
+cProc IOCTLOpen, <PUBLIC>, <si,di,es>
+
+ParmW Nameptr
+
+cBegin
+        mov     dx,Nameptr
+        MOV     AX,3D02H
+        INT     21H             ; Open the device
+        JC      NO_DEV_ERR      ; No device
+        MOV     BX,AX
+        MOV     AX,4400H
+        INT     21H             ; Make sure it IS a device
+        JC      CLOSE_NO_DEV
+        TEST    DX,4080H
+        JZ      CLOSE_NO_DEV
+        mov     ax,bx           ; Return the handle
+        jmp     short PXDONE
+
+CLOSE_NO_DEV:
+        mov     ax,3e00H        ; Close
+        int     21H
+NO_DEV_ERR:
+        mov     ax,-1
+PXDONE:
+cEnd
+
+;**     IOCTLClose - Close the indicated handle
+;
+;  ENTRY:
+;       Handle
+;  EXIT:
+;       None
+;  USES:
+;       Standard 'C'
+;
+cProc IOCTLClose, <PUBLIC>, <si,di,es>
+
+ParmW Handle
+
+cBegin
+        mov     bx,Handle
+        MOV     AX,3E00H
+        INT     21H             ; close the device
+cEnd
+
+;**     IOCTLWrite - Perform IOCTLWrite to device handle
+;
+;  ENTRY:
+;       Handle to open device
+;       Pointer to data to write
+;       Count in bytes of data to write
+;  EXIT:
+;       AX = -1 error
+;       else AX = input count
+;  USES:
+;       Standard 'C'
+;
+cProc IOCTLWrite, <PUBLIC>, <si,di,es>
+
+ParmW WHandle
+ParmW WDataPtr
+ParmW WCount
+
+cBegin
+        mov     bx,WHandle
+        mov     cx,WCount
+        mov     dx,WDataPtr
+        MOV     AX,4403H        ; IOCTL Write
+        INT     21H
+        JC      Werr
+        CMP     AX,CX
+        JNZ     Werr
+        jmp     short WDONE
+
+WERR:
+        mov     ax,-1
+WDONE:
+cEnd
+
+;**     IOCTLRead - Perform IOCTLRead to device handle
+;
+;  ENTRY:
+;       Handle to open device
+;       Pointer to data area to read into
+;       Count in bytes of size of data area
+;  EXIT:
+;       AX = -1 error
+;       else AX = input count
+;  USES:
+;       Standard 'C'
+;
+cProc IOCTLRead, <PUBLIC>, <si,di,es>
+
+ParmW RHandle
+ParmW RDataPtr
+ParmW RCount
+
+cBegin
+        mov     bx,RHandle
+        mov     cx,RCount
+        mov     dx,RDataPtr
+        MOV     AX,4402H        ; IOCTL Read
+        INT     21H
+        JC      Rerr
+        CMP     AX,CX
+        JNZ     Rerr
+        jmp     short RDONE
+
+RERR:
+        mov     ax,-1
+RDONE:
+cEnd
+
+
+sEnd    CODE
+
+        end