add int17 to printer.

Author: tschak909

printer/header.asm

@@ -28,7 +28,7 @@ _sys_hdr_ label near
 	dw	8000h
 	dw	Strategy_
 	dw	Interrupt_
-	db	'P', 'R', 'N', ' ', ' ', ' ', ' ', ' '
+	db	'L', 'P', 'T', '1', ' ', ' ', ' ', ' '
 
 _SYS_HEADER ends
 

printer/init.c

@@ -39,7 +39,7 @@ cmdFrame_t cmd;
 union REGS regs;
 extern void *config_env, *driver_end;
 
-extern void setf5(void);
+extern void set17(void);
 
 #pragma data_seg("_CODE")
 
@@ -68,6 +68,8 @@ uint16_t Init_cmd(SYSREQ far *req)
   check_uart();
 
   consolef("Installed\n");
+  set17();
+  consolef("INT 17 functions installed\n");
 
   return OP_COMPLETE;
 }

printer/int17.c

@@ -0,0 +1,54 @@
+#include <dos.h>
+#include <i86.h>
+#include <fujicom.h>
+#include <stdint.h>
+#include "print.h"
+#include "commands.h"
+
+static cmdFrame_t _cmdFrame;
+
+#pragma data_seg("_CODE")
+
+/*
+ * DL		== direction
+ * AL		== device
+ * AH		== command
+ * CL		== aux1
+ * CH		== aux2
+ * SI           == aux34
+ * ES:BX	== far buffer pointer
+ * DI		== buffer length
+ */
+int int17(uint16_t direction, uint16_t cmdchar, uint16_t aux12, uint16_t aux34,
+	  void far *ptr, uint16_t length)
+#pragma aux int17 parm [dx] [ax] [cx] [si] [es bx] [di] value [ax]
+{
+    int reply;
+    unsigned char ah=cmdchar >> 8;
+    unsigned char al=cmdchar & 0xFF;
+
+    _enable();
+
+    _cmdFrame.device = 0x40;
+    _cmdFrame.comnd = 'W';
+
+    switch (ah)
+    {
+    case 0:
+        fujicom_command_write(&_cmdFrame,&al,1);
+        return 0;
+    case 1:
+        return 0;
+    case 2:
+        return 0;
+    }
+
+    return 0;
+}
+
+void set17(void)
+{
+    extern void int17_vect();
+
+    _dos_setvect(0x17, MK_FP(getCS(), int17_vect));
+}

printer/iwrap.asm

@@ -0,0 +1,39 @@
+_TEXT	segment word public 'CODE'
+	extern	int17_:near
+
+	; Macro to create an interrupt wrapper for a given C function
+INTERRUPT MACRO func
+	PUBLIC func&vect_
+	func&vect_ PROC NEAR
+	push	bx
+	push	cx
+	push	dx
+	push	si
+	push	di
+	push	bp
+	push	ds
+	push	es
+
+; Set up data segment
+	push	cs
+	pop	ds
+
+	call	func
+
+	pop	es
+	pop	ds
+	pop	bp
+	pop	di
+	pop	si
+	pop	dx
+	pop	cx
+	pop	bx
+	iret
+	func&vect_ ENDP
+ENDM
+
+	INTERRUPT	int17_
+
+_TEXT	ends
+
+	end

printer/makefile

@@ -15,8 +15,8 @@ LDFLAGS = &
 	OPTION MAP, NODEFAULTLIBS &
 	LIBPATH ../fujicom
 
-CFILES  = commands.c dispatch.c init.c print.c 
-AFILES  = header.asm 
+CFILES  = commands.c dispatch.c init.c print.c int17.c
+AFILES  = header.asm iwrap.asm
 OBJS = $(CFILES:.c=.obj) $(AFILES:.asm=.obj)
 
 $(TARGET): $(OBJS)