The following describes the connection between the Apple IIe and the Apple
Color Plotter. DO NOT USE the High Speed Serial Card with the IIe.
I. Apple IIe
1. Super Serial Card (SSC)
A. Circuit Configuration
Near the internal cable (Part 590-0021) of the SSC there is a
removable block of pins with a triangle on its top face. Make
sure this jumper block is plugged into its socket so that the
triangle points to the word TERMINAL printed on the card.
This configuration, called modem elimination, compensates for the
standard RS-232-C pin assignments so that the internal cable of
the SSC can transmit signals to the Imagewriter through the
appropriate pins.
B. IIe Motherboard Slot
a. Preferred: Slot 1
b. Range: Any slot EXCEPT AUX
C. SSC Switch Settings
SW1: 1 2 3 4 5 6 7 SW2: 1 2 3 4 5 6 7
| | | |X| |X|X| |X| | |X| | | | (ON)
|X|X|X| |X| | | | |X|X| |X|X|X| (OFF)
These switch settings are for: 9600 baud (SW1: 1-4), Printer Mode (5-6),
Normal Clear To Send (7), 8 data bits and 1 stop bit (SW2: 1), no delay
after CR (2), video off with an 80 character line (3-4), no LF after CR (5),
Disabled ACIA-CPU interrupts (6), and Normal Clear To Send (7).
No parity is set automatically in the Printer Mode.
II. The Connection
1. Cable
Serial and Communications Cable
(Part 590-0037)
From To
Super Serial Card
IIe Back panel Apple Color Plotter
DB-25 connector DB-25 connector
signal - pin wiring pin - signal
Frame Ground 1 <-> 1 Frame Ground
Tx 2 <-> 2 Tx
Rx 3 <-> 3 Rx
RTS 4 <-> 4 RTS
Signal Ground 7 <-> 7 Signal Ground
DTR 20 <-> 20 DTR
2. Signal
1. Levels from Super Serial Card:
a. True (asserted): 0 volts
b. False: +5 volts
III. Apple Color Plotter
1. Switch settings
1 2 3 4 5 6 7 8
| | | | |X|X|X|X| (ON)
|X|X| |X| | | | | (OFF)
These switch settings are for: 8 data bits (SW 1), no parity (SW 2),
1 stop bit (SW 4-5), 9600 baud (SW 6).
2. Test
A. Set paper width to 8.5 inches or larger.
B. Assemble and install pen head.
C. Turn on Plotter and insert paper to paper set mark.
D. Press pen up/down (test) button.
Plotter will run automatic test routine.
Some applications may not give you all the features of the Apple Color
Plotter.