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	 =	 //c Serial Ports -- J.A.K. //x          =

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HAND CONTROL

-----------------------------------------------------------------

Connector	Signal

Pin Number	Name		Description



1		GAMESW1 	Switch input (paddle #1)

2		+5		+5 VDC (Do not exceed 100 MA)

3		GND		System Ground

4,9		-		Not used for hand controllers

5,8		PDL0 & PDL1	Hand control inputs.  Each of

				these must be connected to a 1K

				pot connected to +5

6		N.C.		Not connected

7		GAMESW0 	Switch input 0 (paddle #0)



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MOUSE CONNECTOR

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Connector	Signal

Pin number	Name		Description



1		MOUSEID 	Mouse Identifier

2		+5V		+5VDC (Do not exceed 100 ma.)

3		GND		System Ground

4		X1		Mouse X-direction Indicator

5		X0		Mouse X-movement interrupt

6				Mouse button

7		MSW		Mouse button

8		Y1		Mouse Y-direction indicator

9		Y0		Mouse Y-movement interrupt



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EXTERNAL POWER

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Connector	Signal

Pin Number	Name		Description



1,7				Not Connected

2,3		Ground		Common electrical ground

4		Chassis 	Chassis ground

5,6		+15V		+15VDC input to converter



=================================================================

	  Description and Setup of Apple //C Serial Ports





The Apple //c serial ports are 5-pin DIN connectors.  Both Port 1 (Printer) and

Port 2 (Modem) have the same pin-out and signal description.  Here are the cable

descriptions for connecting them to the ImageWriter and the Apple Modem.



	  Apple //c Serial Port  -  ImageWriter  -  Apple Modem



		 DTR (1)	      6 - DSR	      6 - DTR

		 TXD (2)	      3 - RCD	      9 - TXD

		 GND (3)	      7 - GND	      3 - GND

		 RCD (4)	      2 - TXD	      5 - RCD

		 DSR (5)	     20 - DTR	      2 - DSR

						       __

			_ ______		      |  ]

		       |_|	 \		      |  ]

		   (5)	   (1)	  \ ________________ /	 ]

				   )________________)	 ]

		   (4)	   (2)	  /		     \	 ]

		       (3)______ /		      |  ]

						      |__]



		 DIN type connector	    DB type connector



Setting up the printer port from within a program on the //c is essentially the

same as changing the settings on previous interface cards: after first directing

output to the serial port (using PR#1 and PR#2 for Ports 1 and 2, respectively),

the commands can then be sent to the serial port.  Each command for Port 1 must

be preceded by <CTRL-I>.  The commands for Port 1 are:



Command 	     Description



 nnn		     Set line width (from 001 through 255): This command must

                     be followed by an 'N' or a <CR>.



 nnB		     Set baud rate to value corresponding to nn.



		     nn   Rate		       nn   Rate



		     01 - 50		       09 - 1800

		     02 - 75		       10 - 2400

		     03 - 110		       11 - 3600

		     04 - 135		       12 - 4800

		     05 - 150		       13 - 7200

		     06 - 300		       14 - 9600

		     07 - 600		       15 - 19200

		     08 - 1200



 nB		     Set Data Format to values corresponding to n.



		     n	-  Format



		     0	   8 data 1 stop

		     1	   7 data 1 stop

		     2	   6 data 1 stop

		     3	   5 data 1 stop

		     4	   8 data 2 stop

		     5	   7 data 2 stop

		     6	   6 data 2 stop

		     7	   5 data 2 stop



 I		     Echo output to screen.



 K		     Disable <LF> after <CR>.



 L		     Generate <LF> after <CR>.



 nP		     Set Parity corresponding to n.



		     n	-  Parity



		     0	   none

		     1	   odd

		     2	   none

		     3	   even

		     4	   none

		     5	   mark (1)

		     6	   none

		     7	   space (0)



 R		     Reset Port 1 and exit from serial port 1

		     firmware.



 S		     Send a 233 millisecond Break character



 Z		     Zap (ignore) further command characters

		     (until Control-Reset or PR#1).  Do not

		     format output or insert carriage returns

		     into output stream.



    Port 2 uses the same commands, with the differences and additions listed

    below.  Each command for Port 2 must be preceded by a <CTRL-A>.



 nnn		     same



 nnB		     same



 nD		     same



 I		     same



 K		     same



 L		     same



 nP		     same



 Q		     Quit Terminal Mode



 R		     same



 S		     same



 T		     Enter Terminal Mode.  Use this command after IN#2 only.

		     If you follow this command by PR#2, the //c will echo

		     input to output. (NOTE: If the other device is also

		     echoing input to output, entering the first character

		     will cause an infinite loop.  Use <CTRL-RESET> to get





 Z		     same



 Control-T	     When issued from a remote device, this command puts the

		     //c in terminal mode if IN#2 is already in effect.  The



 Control-R	     When issued from a remote device, this command undoes

		     the terminal mode command.  If IN#2 and PR#2 are in

		     effect, the remote keyboard and display become the input

		     and output devices of the local //c.  The command is the

		     same as <CTRL-A> "Q" typed locally.



=================================================================



	  Description Of the Apple //C Video Expansion Port





	  The back panel of the Apple //c has a DB-15 connector for

sophisticated video interfaces external to the computer. See table below for

description of signals.



	  In the table, the column labled Deriv indicates what clock signals the

video signals are derived from.  LDPS, CREF and PRAS have a maximum delay of

30ns from the appropriate 14MHz rising edge.  SEROUT is clocked out of a 74LS166

by  the rising edge of 14M and has a maximum delay of 35ns. VIDD7 is driven from

a 74LS374 and has a maximum delay of 28ns from the rising and (if 80 column)

falling edges of phase1.



	  To align CREF so it is in the same phase at the beginning of every

line, certain clock signals must be stretched. This stretch is for one 7M cycle

(140ns), and occurs at the end of each video line.  All timing signals except

14M, 7M and CREF are stretched.



	     WARNING!!!   The signals at the DB-15 on the Apple //c are not the

same as those on the Apple ///.  Do not attempt to plug a cable intended for one

into the other.



	     WARNING!!!   Several of these signals, such as 14MHz, must be

buffered within about four inches (10 cm) of the back panel connector -

preferably inside a container directly connected to the back panel.





	  The Video Expansion Connector Pinouts



	  Pin  Deriv  Name    Description



	  1    phase1 TEXT    Video text signal from TMG; set to

			      inverse of GR, except in double

			      high-resolution mode



	  2	      14M     14M master timing signal from the

			      system oscillator



	  3    Q3     SYNC*   Display horizontal and vertical

			      synchronization signal from IOU pin 39



	  4    PRAS   SEGB    Display vertical counter bit from IOU

			      pin 4; in text mode indicates second

			      low-order vertical counter; in

			      graphics mode indicates low-resolution



	  5	      1VSOUND One-volt sound signal from pin 5 of

			      the audio hybrid circuit (AUD)



	  6    14M    LDPS*   Video shift-register load enable from

			      pin 12 of TMG



	  7    PRAS   WNDW*   Active display area blanking; includes

			      both horizontal and vertical blanking



	  8	      +12 V   Regulated +12 volts DC.; can drive

			      350mA



	  9    14M    PRAS*   RAM row-address strobe from TMG pin 19



	  10   PRAS   GR      Graphics mode enable from IOU pin 2



	  11   14M    SEROUT* Serialized character-generator output

			      from pin 1 of the 74LS166 shift

			      register



	  12	      NTSC    Composit NTSC video signal from VID

			      hybrid chip



	  13	      GND     Ground reference and supply



	  14   phase0 VIDD7   From 74LS374 video latch; causes

			      half-dot shift if high



	  15   14M    CREF    Color reference signal from TMG pin 3;

			      3.58MHz



	     WARNING!!!   Use caution--The maximum allowable current drain of

+12V regulated power at the video expansion connector is 300 milliamps.  If the

external device draws more than this. it can damage the computer or cause the

power supply to shut down.





=================================================================





	       Description Of Apple //C External Disk Port



The Apple //c external disk drive port is a DB-19 connector.  The signals

available at the port are as follows:



				     10 - WRPROT

		     1 - GND

				     11 - SEEKPH0

		     2 - GND

				     12 - SEEKPH1

		     3 - GND

				     13 - SEEKPH2

		     4 - GND

				     14 - SEEKPH3

		     5 - +12V

				     15 - /WRREQ

		     6 - + 5V

				     16 - NC

		     7 - +12V

				     17 - /DR2

		     8 - +12V

				     18 - RDDATA

		     9 - /EXTINT

				     19 - WRDATA



CAUTION: This is not a recommendation by Apple to connect any but the Disk //c.

	 Connecting any other disk drive will invalidate the Apple warranty.





================================================================



	       Using the AppleSoft Sampler on a //c





Customers are finding that the Applesoft Sampler diskette (included with the

Applesoft Tutorial), when used on an Apple //c, does not function as expected.

Menus generated by this software are correct when used on an Apple //e, but

there is a vertical displacement of one line between menu selection numbers and

menu item descriptions when executed on an Apple //c.



The problem resides in two programs (CONVERTER and DISK.MENU) located on the

Applesoft Sampler diskette.  Load the "CONVERTER" program and list line number

625.  This line currently reads;



     625 VTAB PEEK(37): IF COL80 THEN VTAB PEEK(1531)



Change this line to read:



     625 IF COL80 THEN VTAB PEEK(1531) : GOTO 630



and then add the following line:



     627 VTAB PEEK(37)



SAVE the file "CONVERTER".



Make the same changes to the file "DISK.MENU"



These changes will fix the problem.



We have been informed that these changes will soon be included in the final

product.  However, the problem exists in product that is already shipping. Our

suggestion is to perform the above changes to the CONVERTER and DISK.MENU

programs and give the fixed version of the program to those that need it.



NOTE:  The following program will automatically update the Tutorial diskettes.



     100 D$ =  CHR$ (4): REM CTRL-D

     105  PRINT D$;"OPEN COMMAND.FILE"

     110  PRINT D$;"WRITE COMMAND.FILE"

     115 F$ = "DISK.MENU": GOSUB 200

     120 F$ = "CONVERTER": GOSUB 200

     125  PRINT "RUN DISK.MENU"

     130  PRINT D$;"CLOSE COMMAND.FILE"

     135  PRINT D$;"EXEC COMMAND.FILE"

     140  END

     200  PRINT "LOAD ";F$

     205  PRINT "625 IF COL80 THEN VTAB PEEK(1531):GOTO 630

     210  PRINT "627 VTAB PEEK(37)

     215  PRINT "UNLOCK ";F$

     220  PRINT "SAVE ";F$

     225  RETURN