Download PERIPHERAL TECHNOLOGY

PT68K4
User's Manual
Copyright 1990
by
PERIPHERAL TECHNOLOGY
1480 Terrell Mill Rd. ,Suite 870
Marietta, Ga. 30067
Revision 4/6/90
Table of Contents
Power Connection
...........................................
1
Monitor Choice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
RS-232 Terminal Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Monochrome Monitor Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
Color Monitor Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Floppy Disk Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Speaker Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . " . . 4
LED Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Reset Switch . . . . . . . . . . . . . . . . . . . . . . . . . . .'. . . . . . . . . . . . . . . . . . . . . 4
RS-232 Cable Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Printer Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Hard Disk Installation
.......................................... 7
DRAM Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . '. . . . . . . . . . 10
Parts Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
PT68K4 Users Manual
Page 2
GETTING STARTED
These instructions assume that you have completed construction of the kit or have purchased an
assembled board. Instructions for kit assembly are contained in a separate manual.
POWER CONNECTION
Connect power to the PT68K4 board. The power connector is J12.
•
•
•
•
•
•
•
•
•
•
•
•
No ·connection
Index
+12V
-12V
GND
GND
GND
GND
-5V
+5V
+5V
+5V
Monitor Choice
These types of monitors may be connected to the PT68K4:
1. RS-232 terminal (Connector JI8).
2. IBM PC/XT compatible keyboard, monochrome adaptor card and monochrome monitor.
3. IBM PC/XT compatible keyboard, color adaptor card and color monitor.
PT68K4 Users Manual
Page 1
RS-232 TERMINAL INSTALLATION
Connect a cable between J18 and the CRT. See page 5, "RS-232 Interface" for more
information. n8 is the MAIN terminal port. J17, n9 or J20 can be used for other terminals
or serial printer ports. The use of n7, J19 and J20 is determined by the operating system.
When using this type of termi nal it is necessary to press the < CR > key a few times when
turning on the system. This allows the HUMBUG monitor to determine the baud rate of your
terminal. The terminal should be configured for eight dat~ bits, one stop bit, no parity and a
baud rate between 300 and 19,200.
MONOCHROME MONITOR INSTALLATION
l. Install an IBM compatible monochrome adaptor card in one of the IBM compatible I/O slots.
2. Plug a monochrome monitor into the monochrome display adaptor card.
3. Plug an IBM PC/XT/AT compatible keyboard into the keyboard connector port no. The
keyboard must be set to XT mode if it has an XTI AT switch position.
4. The HUMBUG monitor initializes the adaptor card on power up and displays a message. See
the HUMBUG Monitor Manual for more information on monitor selection.
COLOR GRAPHICS (CGA) INSTALLATION
l. Install a color graphics adaptor (CGA) card in one of the PC/XT 1/0 slots.
2. Plug a color monitor into the color graphics adaptor card.
3. Plug an PC/XT or AT compatible keyboard intd the keyboard connector port no. The
keyboard must be set to XT mode if it has an XTI AT switch position.
4. The HUMBUG monitor initializes the adaptor card on power up and displays a message. See
the HUMBUG Monitor Manual for informatioll on monitor selection.
PT68K4 Users Manual
Page 2
Floppy Disk Installation
The PT6SK4 computer contains two floppy disk controllers. The WD1772 controller is used
for compatibility with the PT6SK2 computer. The WD 1772 controller will support either 3-1/2"
or 5-1/4" drives. Storage capacities are 360K for 40 track drives and 720K for SO track drives.
The WD1772 will not work with 1.2 MEG or 1.44 MEG drives that are sometimes used with
IBM AT/clone computers. The drive cable used for the WD1772 runs all connections in parallel
and does not twist part of the cable like IBM clone drive cables. Be certain not to use an
IBM/clone drive cable. Drives controlled by the WD1772 controller should be connected to
header strip J16.
The WD37C65 controller will support two drives of either. 3.5 or 5-1/4 sizes. Drive capacities
of 360K, 720K, 1.2 MEG and 1.44 MEG are supported. The WD37C65 uses an IBM AT floppy
drive cable. This cable has a twist in part of the cable between the A and B drive. Drives
controlled by the WD37C65 controller should be connected to header strip JS.
Selection of floppy controller will depend on the lise of the PT68K4. If you are upgrading a
PT6SK2 computer you will probably use the WD1772 controller. If you are building a new
computer with the PT6SK4 system board you would probably select the WD37C65 controller
since it supports high density drives. The final choice of controller may be determined by
software support provided by your choice of operating system.
Cable Connection WD1772
Connect a cable between the tloppy controller (J 16) and the floppy drive(s). Make sure that Pin
1 on the controller end connects to Pin 1 on the floppy drive(s). If the cable is reversed and a
non-write-protected disk is in the drive, the diskette may be damaged.
Cable Connection WD37C65
Connect a cable between the floppy controller (18) and the floppy drive(s). Make sure that Pin
1 on the controller end connects to Pin 1 on the floppy drive(s). All drives connected should be
jumpered as drive 2. The position of the drive on the cable determines drive ID. The drive on
the end of the cable is drive one (Drive A); the drive in the middle (if present) will be the
second drive (Drive B).
Tennination Resistors
If you have two floppy drives, you should only have one resistor terminator pack installed. The
resistor terminator should be installed on the last drive in the system (the one at the far end of
the cable). Some of the newer drives (3-1/2 and 5-1/4 inch) do not contain any terminating
resistors, and this step will not apply if you have a newt:r drive(s).
PT68K4 Users Manual
Page 3
SPEAKER CONNECTION
Plug the speaker into J35. The speaker wires should be on the outer terminals. Connection of
the speaker is optional; however, no bell will be available when using the PC/XT keyboard and
monitor unless the speaker is connected. Depending on your choice of software, the speaker
may beep on power up after successful completion of system tests.
0------"
J35
o
To Speaker
~ _ _ _ _--,I
LED CONNECTION
Most Baby AT cabinets have a panel with three LED's with wires attached. The appropriate
wire should be plugged into the appropriate pins on the pT68K4 system board.
J36 - Power
.J30 - Test LED (Only used when building kits - should connect to disk LED)
J3l - Halt status
Connect the power LED to J36.
Connect the Turbo mode LED to J31 (HALT STATUS). Note that the HALT LED will light
for a second when turning the computer on or when pressing the reset switch.
The LED plugs are not polarized so it may be necessary to reverse the connector if the LED's
do not light. Note: the LED's will not be damaged if the plug is installed incorrectly.
RESET SWITCH CONNECTION
Plug, the connector from the reset switch to J37.
SYSTEM STARTUP,
The sign-on messages and procedures for starting the PT68K4 will vary depending on the
operating system(s) that is selected. For SK*DOS refer to the HUMBUG manual. For OS9 see
the supplemental installation manual that is included with OS9.
PT68K4 Users Manual
Page 4
RS-232 INTERFACE INFORMATION
Connectors J17., J18, J19, J20
PIN
DESCRIPTION
1
2
No Connection
Received Data
Transmitted Data
Index
Ground
No Connection
Clear To Send (CTS)
No Connection
Request to Send (RTS)
No Connection
3
4
5
6
7
8
9
10
(Viewed from component side)
1 o
2 o
0 10
0 9
008
3
4
5 o
.0
0,
7
6
TYPICAL CRT TO COMPUTER CONNECTION
PIN
2
3
5
7
J17, J18, J19 OR J20
DB-25
0----------------------0
0
0
·0
0
0
0
PIN
2
3
7
20
Note: CTS must be connected for the RS-232 interface to work. RTS is not usually required
unless interfacing to a modem. CTS should be connected to + 12V if no DTR is available
from the terminal.
PT68K4 Users Manual
Page 5
PRINTER INSTALLATION
There are two ways to interface a printer to the PT68K4 computer. One option is to connect
a printer to the PIA port (115) on the PT68K4 computer. The other method is to connect a
printer to the printer port of a monochrome or color card.
PIA Printer Port
The PIA port (J15) is arranged to allow IDC connectors to connect between J8 and the printer
connector. To construct a cable use 20 conductor cable and follow the diagram below.
stripe on cable
-
.j.
1r--
1
20 Conductor IDC cable
I
17 Pins are not used--+
+-20 Pins are not used
I
'---
40
37
t
Centronlcs Prlnter
Connector
'---
t
40 Pin female IDC connector
40 Pin IDC Connector
The cable should be positioned so that the striped end of the cable starts on the Pin I end of the
IDC connector. The last 20 pins are not used.
37 Pin Printer Connector
The cable should be positioned on the connector with the striped end of cable starting on the Pin
1 end of the printer connector.
MONO/COLOR Printer Port
If using the printer port of the monochrome or color adaptor card you will need an IBM
compatible printer cable. These cables are available fron: Peripheral Technology as well as
other IBM clone computer dealers. The adaptor card uses a male DB-25 connector with a
Centronics 37 pin male connector on the printer end.
PT68K4 Users Manual
Page 6
Hard Disk Interface
The PT68K4 currently supports Western Digital MFM XT type of controllers. Although other
brands of controllers which emulate the Western Digital" register set should work with the
PT68K4, no guarantee is made that these will work properly. Peripheral Technology only
supports Western Digital hard disk controllers. As of the date of this manual the GEN2 card is
the current Western Digital card. Older Western Digital half-size MFM cards may be also be
used with the PT68K4 computer.
WDXT-GEN2 Installation
1. Plug the controller into one of the PC/XT expansion slots.
2. Connect a 34 conductor ribbon cable between J1 of the GEN2 card and the hard drive.
3. Connect the 20 and 34 conductor ribbon cables between the controller card and the winchester
drive. Use J2 for the first winchester and 13 for the second winchester drive. Be certain to
observe Pin 1 polarization of the cable between the drive and the controller card. If the
cables are plugged in backwards the drive or controller could be damaged.
4. The drive select jumper on your hard drive should be set for the first hard drive.
5. Connect power to the hard disk drive. Any of the cables from the power supply may be
used. 6. You are now ready to format the drive. Consult the 'HDFORMA T' command in the
SK*DOS
manual for information on formatting the drive. Use a step rate code of '5' for
drives that
have a buffered step. If you are using OS9 you should refer to the supplemental
installation
instructions included with OS9.
DRAM Installation
The PT68K4 may contain between 512K and 4096K of onboard memory. Memory may be
installed in 5l2K increments. An optional 8MB card may be installed for additional memory.
The PT68K4 uses 256Kx4 DRAM's. Memory speed should be lOOns.
I
MEMORY
0- 512K
512-1024K
1024-1536K
1536-2048K
2048-2560K
2560-3072K
3072-3584K
3584-4096K
BANK
1
2
3
4
5
6
7
8
CHIPS
I
U32,U43,U62,U76
U33,U44,U63,U77
U34,U45,U64,U78
U35,U46,U65,U79
U36, U47·, U66" U80
U37,U48,U67,U81
U38,U49,U68,U82
U39,U50,U69,U83
PT68K4 Users NIanual
Page 7
CONFIGURATION OPTIONS
Il - J7 PC/XT I/O Expansion Slots
J8 - High Density Floppy Drive Connector
J9 - ALT86 Interface Connector
IlO - PC/XT Keyboard Connector
III - Test LED Probe (Educational Kit only)
Il2 - Power Connector (See Page 1 for pin definitions)
Il3 - Enable IRQ Level 7, DRQ from WD 1772 (Shorted = enabled)
Il4 '- Enable WD37C65 Floppy Controller (Shorted = enabled)
Il5 - Printer Port (MC68230P)
Il6 - WD1772 Floppy Controller
Il7 - COM 4 Port
Il8 - COM 1 Port
Il9 - COM 2 Port
J20 - COM 3 Port
J21 - Enable IRQ Level 3 from IBM Ports (Shorted = enabled)
J22 - Enable IRQ Level 4 from IBM Ports (Shorted = enabled)
J23 - Enable IRQ Level 5 from IBM Ports (Shorted = enabled)
J24 - Enable IRQ Level 6 from IBM Ports (Shorted = enabled)
J25 - Enable IRQ Level 7 from IBM Ports (Shorted = enabled)
J26 - EPROM Select (1 =27128 or 27256, 2 =27512)
J27 - 2Kx8 or 32Kx8 SRAM Select (1 =2K, 2=32K)
J28 - EPROM Select (1 =27128,2=27256 or 27512)
J29 - 2Kx8 or 32Kx8 SRAM Select (l =32K,2=2K)
J30 - Test LED Indicator (Education kit only)
J31 - Halt LED Indicator
J32 - Enable Manual Switch IRQ Level 7
J33,- IRQ Level 7 Interrupt Switch
J34 - Memory Expansion Connector
J35 - Speaker Connector
J36 - Power LED Indicator
J37 - External Reset Switch
J38 - System Configuration
Position 1 - DRAM enabled
Position 2 - DRAM disabled, EPROM is mapped to address 0
J39 - Speed Selection (Position 1 = 8MHZ, 2 = 16MHz)
Note: J30, J31 and J36 will drive LED's directly.
\
PT68K4 Users Manual
Page 8
o
·0
'0
o
o
o
0,
o
o
o
o
o
o
o
o
o
o
o
o
PT68K4 SPECIFICATIONS
MC68000 Processor, 16 MHZ Clock, No wait state DRAM - uses lOONS RAM
000000-3FFFFF
400000-BFFFFF
FFOOOO-FFOFEF
FFOOOO-FFFFFF
FFOFF 1-FFOFFF
F80000-F9FFFF
F AOOO 1-FBFFFF
CODOn 1-DFFFFF
FE0001-FE003F
FE0041-FE007F
FE0081-FEOOBF
FEOOC 1-FEOOFF
FE0101-FE013F
FE01C1-FE01FF
DRAM (4096K)
DRAM (8192K) Optional Memory Board
SRAM (4K) Battery Backed-up RAM (When using 2Kx8 SRAM)
SRAM (64K) (When using 32Kx8 SRAM)
Clock Registers (MK48T02)
EPROM (l28K)
IBM Slot 110 Ports (odd bytes)
IBM Slot MEM Read/Write (odd bytes)
MC68681 DUART
MC68681 DUART
MC68230 PIA
WD 1772 Floppy Drive Select
WD 1772 Floppy Disk Controller
IBM Keyboard
I
FE010l-Drive Select Register
BIT 1
BIT 0
0
0
0
1
1
1
0
1
Drive
Drive
Drive
Drive
select
select
select
select
0
1
2
3
Bit 5 - O=Single density
l=Double density
Bit 6 - O=Side 0
l=Side 1
Note: The first 8 locations of EPROM are mapped to address 0 after a reset. After four" AS"
strBbes RAM is restored to the first eight locations,
Board can use 27128, 27256, or 27512 EPROM (250NS o'r faster).
Each I/O decode is 64 bytes. This results in some of the I/O devices being multiple mapped
within their I/O blocks.
WD1772 supports up to four DS/DD 40 or 80 track drives. Drives may be 3.5 or 5-114 size.
Does not support 1.2 MEG or 1.44 MEG drives.
WD37C65 supports up to two drives. Drives may be 3.5 or 5-114 and densities of 360K, 720K,
1.2M or 1.44M.
The clock (MK48T02) has a lithium battery mounted in the chip. The expected life of the battery
is approximately 5 years. The battery wj]] supply 31,000 hours of operation.
The PC/XT expansion slots will allow the use of an IBM PC/XT keyboard, monochrome
monitor and hard-disk interface card (WD-GEN2).
PT68K4 Users Manual
Page 9
Parts List PT68K4
1
1
1
1
2
4
3
1
2
1
1
1
3
1
2
2
2
1
2
1
3
32
1
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
7
2
Ul
U2
U3
U4
U5,U61
U6,U9,U42,U56
U7,UlO,UI4
U8
Ull,U53
U12
UB
U15
UI6,U17,U18
U19
U20,U23
U21,U22
U24,U29
U25
U26,U27
U28
U30,U31,U41
U32-U39,U43-U50
U62-U69,U76-U83
U40
U51,U70,U84
U52
U54
U55
U57
U59
U60
U58
U71
U72
U73
U74
U75
U85
U86
U87
U88
J1-J7
J8,J16
14.318 MHZ Oscillator
3.686400 MHZ Oscillator
9.6 MHZ Oscil Jator
WD37C65
74F74
74LS175
7406
74LS322
PAL16L8
MC68230P
7442
WD1772
74F373
74LS245
MC1489
MC68681P
MC1488
MK48T02
27256
2Kx8 SRAM (6116)
74LS138
256Kx4 DRAM (lOOns)
PAL22VIO-15 or PAL20XI0-20
74F257
MC68000P16
74LS30
74LSOO
DDU66-100 100 NS Delay
74LS74
74LS04
74ALS74
PAL20L8-15
74LS32
74F20
16MHZ OSC
32MHZ OSC·
74LS 148
74LS 164
74LS390
555
62 Pin Card edge
17x2 Header
PT68K4 Users Manual
Page 10
Parts List PT68K4
1
1
8
2
1
4
1
7
1
1
7
10
1
3
3
2
16
1
2
41
32
2
3
1
1
17
13
39
2
5
4
1
1
1
19
110
111,113,114
130-132,136,137
112
115
117-120
121-125
126-129,133,138,139
134
135
5x2 Header
5 Pin DIN Connector
2x1 Header
Rl,R8,R10,R12,R27-R29
R2-R6,R15-R19
R7
RO,R9,Rll
R13,RI4,R39
R20,R41
R21,R22-R26
R30-R38,R40
R42
R43,R44
C2-C3,C8-C24
C33,C42-C45
C54-C58,C60-C62
C71-C77, C79
C25-C32, C34-C41
C46-C53, C63-C70
C4-C5
C1,C7,C59
C78
10K Ohm 1I4W Resistor
150 Ohm 1/4W Resistor
4.7K Ohm 1I4W Resistor
2.2K Ohm 1/4W Resi&tor
330 Ohm 1I4W Resistor
33x8 DIP Resistor
33 Ohm 1I4W Resistor
6x 1 Power Connector
20x2 Header
5x2 Header
5x2 Header (No index pin)
3x1 Header
44 Pin Edge Connector
4xl Header
1OKx7 Pin SIP Resistor
1M 1I4W Resistor
0.1 uF Capacitor
0.33uF Capacitor
47p~
Capacitor
10uF Tant Capacitor
luF Tant Capacitor
8 Pin IC Socket
14 Pin IC Socket
16 Pin IC Socket
20 Pin IC Socket
24 Pin IC Socket
28 Pin IC Socket
40 Pin IC Socket
48 Pin IC Socket
64 Pin IC Socket
PT68K4 Board
PT68K4 Users Manual
Page 11
PT68K4 Users Manual
Page 12
7
8
+51
US8
r----f1---;LM555
R
R44
1
o-~--:2::7:-lA15
lRS ~
NIRQ6:--~4_+-_+4_+---~~
NIRQ5;--~4_+-~~+---~~
28 FC0
27 FCI
26 FC2
IS iJMA
L-__,.J;2'-'!1'-!VPA
L-.___~2",5~IPL0
L-.___---!2::4!.jIPLl
L-_ _ _ _,.J;2~3~IPL2
NIRQ41---+~+-~--~----~
NIRQ31---+~~------~~~
HIRQ2'---+-4---'---~~----''''''CI;
NIRQ1--~------------~~
HRESET
L-_______________________________________
RESET
00
01
02
03
04
07
08
OS
010
011
,~----~~----------------------------1~7~HALT
MPUCLK~----------------------------~1~5~CLK
+5
NCAS
NOTACK
NORVSEL
+5
012
013
014
015
+5 13 BR
NC 11 BG
1
2 U54
3 74LS30
4
8
I'll 29 I'll
1'12 301'12
1'13 311'13
1'14 32 A4
AS 33 AS
1'16 341'16
A7 351'17
1'18 361'18
1'19 37 AS
1'110 38 1'110
All 39 All
1'112 40 A12
A 13 41 A13
A1442A14
A15 43 A15
AlB 44 Al6
A 17 45 A17
A18 46 A18
A19 47 A191
A20 48 A201
A21 50 A21
A22 51 A221
A23 52 A23
5
B
NOTK3W 11
NKEY 12
+5
c
r -______ . ________________________~6
AS
20 E
NlOS
~------------------------------8~LOS
7 UOS
+5 12
i3GACK
i
I
I
:I
II
L -__________-'
I,
I
1~86
~l:§.~~-;,
I
I
(!G',: :::
O"f-2..l.
!
-C~"";':;
11"
0Et."·
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'~f2-
J',
t181-j--
,-02
II
~'~f~ -~--~~-+__
cO!.
_,~··>,L\1')".:.9--.--.--"",-,
t-----
,2-rC \0;.;1--I
~L___-_-_-.-J______ ._~___._+
I
t. /
"1---' .
A15
1'07
I'06
1,o5
I'04
1'03
1'02
1'01
1'00
UPPER BYTE
FF0000-FF0FFF
I:I"~
110
19
18
I?
16
IS
I4
~03
=
f
18NRSHAS
lO2 17 1,XTMHI
AS
L~~3
0---\
~~ ~
)'PC'S
~
I.~ 7~lS00
L.o:. r--, l'
<I
.:.31
~4 G~'"
L~
G~'5,
L--
i
j
Y6 9
T
Y5~'0.
74lS175
13 40
12 30
4Q 15
4(1 14
;g i~
?Q
~
NDTK3W
7
\'4 11
Ylr'-
I'
IRQ, DE80UNCE
MARIETTA. GA
'v~1:Q __ r~.~
3
30057
PT68K-4
,!13
A
B
r;:::==========:-J
U42
PERIPHERAL TECHNOLOGY
~~-
4
12 01
1100
14S0 TERRELL MILL RL' SUITE *-:;70
~f',
C
17 05
16 04
15 03
13 02
MK48T02
5,"l!
L
I
o
I
GATE:
5
19 07
18 06
-.--~-------
k~-~.J--i /~~~-HIR07
__r-----l-~1
1'07
I'06
1'05
1'04
1'03
1'02
1'01
1'00
V
2"
6
j IOCU<
T N17?2
AS 4 1D
10 ~
...
v~ _
_'" .0
",3,E
I
J"
",'OR""'E!
AS ~ C
V2~N68230 -,
c
A7...£J8
"":!SN68681A
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9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
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1
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3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
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18 8A13
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19 BA12
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4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
2
3
4
5
6
7
8
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8A13
8A12
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8A10
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8A9
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8A8
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8A6
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28
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17 8A14
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18 8Al3
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19 8A12
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806
805
804
803
802
801
800
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15 BA16
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PERIPHERAL TECHNOLOGY
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tlARIETTA. GA 30057
PT68K-4
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