PERIPHERAL TECHNOLOGY

(1)

PT68K4

User's Manual

PERIPHERAL TECHNOLOGY

1480 Terrell Mill Rd. ,Suite 870 Marietta, Ga. 30067

Revision 4/6/90

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PT68K4 Users Manual

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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

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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

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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

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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

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RS-232 INTERFACE INFORMATION

Connectors J17., J18, J19, J20 PIN DESCRIPTION

1 No Connection

2 Received Data

3 Transmitted Data (Viewed from component side)

4 Index

5 Ground 1 o 0 10

6 No Connection 2 o 0 9

7 Clear To Send (CTS) 3 0 0 8

8 No Connection 4 .0 7

9 Request to Send (RTS) 5 o ⁰_,6

10 No Connection

TYPICAL CRT TO COMPUTER CONNECTION

PIN J17, J18, J19 OR J20 DB-25 PIN 2 0---0 2

3 0 0 3

5 ·0 0 7

7 0 0 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

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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.

1

20 Conductor IDC cable

I

17 Pins +-20 Pins are not used

40

' - - -

t

40 Pin female IDC connector

are

1r--

not used--+ I

' - - - 37

t

Centronlcs Prlnter 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

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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 ^BANK ^CHIPS

I

0- 512K 1 U32,U43,U62,U76 512-1024K 2 U33,U44,U63,U77 1024-1536K 3 U34,U45,U64,U78 1536-2048K 4 U35,U46,U65,U79 2048-2560K 5 U36, U47·, U66" U80 2560-3072K 6 U37,U48,U67,U81 3072-3584K 7 U38,U49,U68,U82 3584-4096K 8 U39,U50,U69,U83

PT68K4 Users NIanual

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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

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PT68K4 SPECIFICATIONS

MC68000 Processor, 16 MHZ Clock, No wait state DRAM - uses lOONS RAM DRAM (4096K)

DRAM (8192K) Optional Memory Board 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

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

I

WD 1772 Floppy Drive Select WD 1772 Floppy Disk Controller IBM Keyboard

FE010l-Drive Select Register BIT 1 BIT 0

0 0

0 1

1 0

1 1

Drive select Drive select Drive select Drive select Bit 5 - O=Single density

l=Double density Bit 6 - O=Side 0

l=Side 1

0 1 2 3

Note: The first 8 locations of EPROM are mapped to address 0 after a reset. After four" AS"

o

strBbes RAM is restored to the first eight locations,

o o o o o o o

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

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Parts List PT68K4

1 Ul 14.318 MHZ Oscillator

1 U2 3.686400 MHZ Oscillator

1 U3 9.6 MHZ Oscil Jator

1 U4 WD37C65

2 U5,U61 74F74

4 U6,U9,U42,U56 74LS175

3 U7,UlO,UI4 7406

1 U8 74LS322

2 Ull,U53 PAL16L8

1 U12 MC68230P

1 UB 7442

1 U15 WD1772

3 UI6,U17,U18 74F373

1 U19 74LS245

2 U20,U23 MC1489

2 U21,U22 MC68681P

2 U24,U29 MC1488

1 U25 MK48T02

2 U26,U27 27256

1 U28 2Kx8 SRAM (6116)

3 U30,U31,U41 74LS138

32 U32-U39,U43-U50 256Kx4 DRAM (lOOns) U62-U69,U76-U83

1 U40 PAL22VIO-15 or PAL20XI0-20

3 U51,U70,U84 74F257

1 U52 MC68000P16

1 U54 74LS30

1 U55 74LSOO

1 U57 DDU66-100 100 NS Delay

1 U59 74LS74

1 U60 74LS04

1 U58 74ALS74

1 U71 PAL20L8-15

1 U72 74LS32

1 U73 74F20

1 U74 16MHZ OSC

1 U75 32MHZ OSC·

1 U85 74LS 148

1 U86 74LS 164

1 U87 74LS390

1 U88 555

7 J1-J7 62 Pin Card edge

2 J8,J16 17x2 Header

PT68K4 Users Manual

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Parts List PT68K4

1 19 5x2 Header

1 110 5 Pin DIN Connector

8 111,113,114 2x1 Header

130-132,136,137

2 112 6x 1 Power Connector

1 115 20x2 Header

4 117-120 5x2 Header

1 121-125 5x2 Header (No index pin)

7 126-129,133,138,139 3x1 Header

1 134 44 Pin Edge Connector

1 135 4xl Header

7 Rl,R8,R10,R12,R27-R29 10K Ohm 1I4W Resistor 10 R2-R6,R15-R19 150 Ohm 1/4W Resistor

1 R7 4.7K Ohm 1I4W Resistor

3 RO,R9,Rll 2.2K Ohm 1/4W Resi&tor

3 R13,RI4,R39 330 Ohm 1I4W Resistor

2 R20,R41 33x8 DIP Resistor

16 R21,R22-R26 33 Ohm 1I4W Resistor R30-R38,R40

1 R42 1OKx7 Pin SIP Resistor

2 R43,R44 1M 1I4W Resistor

41 C2-C3,C8-C24 0.1 uF Capacitor

C33,C42-C45 C54-C58,C60-C62 C71-C77, C79

32 C25-C32, C34-C41 0.33uF Capacitor C46-C53, C63-C70

2 C4-C5 47p~ Capacitor

3 C1,C7,C59 10uF Tant Capacitor

1 C78 luF Tant Capacitor

1 8 Pin IC Socket

17 14 Pin IC Socket

13 16 Pin IC Socket

39 20 Pin IC Socket

2 24 Pin IC Socket

5 28 Pin IC Socket

4 40 Pin IC Socket

1 48 Pin IC Socket

1 64 Pin IC Socket

1 PT68K4 Board

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PT68K4 Users Manual

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RESET

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THR:1-'6~_---+

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U85 74LS148

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4 3

U52

U27 27512 o-~--:2::7:-lA15 1

'--+--'~A14 1'114 26 1'113 1'11323 1'112 2

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06 18014 1'11426 1'113 06 1806

17 2 17

OS 16013 1'113 23 1'112 OS 05 C791

lRS

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NIRQ7'---+~+-~~~--~~

NIRQ6:--~4_+-_+4_+---~~

NIRQ5;--~4_+-~~+---~~

NIRQ41---+~+-~--~----~

NIRQ31---+~~---~~~

HIRQ2'---+-4---'---~~----''''''CI;

NIRQ1--~---~~

28 FC0 27 FCI 26 FC2 IS iJMA

00 5 00 01 4 01 02 3 02 03 2 03

1'112 1'111 AU 21 1'110 1'110 24 AS

04 012 1'112 1'111 04 1604 03 150111'111211'110 03 1503 0

02 13010 1'11024 AS 02 1302

L-__ ,.J;2'-'!1'-!VPA 1 AS 25 1'18

1'18

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1'17 51'16 1'16 6 AS AS 7 A4 1'14 81'13 1'13 S 1'12

01 1209 AS 25 1'18 01 1201 00 1108 1'18 3 1'17 00 1100

1'17 41'16 L-. ___ ~2",5~IPL0

L-. ___ ---!2::4!.jIPLl

HRESET L-_ _ _ _ ,.J;2~3~IPL2

L-_______________________________________ ^~1~8~~

,~----~~---1~7~HALT MPUCLK~---~1~5~CLK

+5 1 NCAS 2 NOTACK 3 NORVSEL 4 +5 5 NOTK3W 11 B NKEY 12

+5

U54 74LS30 8

+5 13 BR

NC 11 BG

r -_ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ~6 AS

20 E NlOS

~---8~LOS 7 UOS +5 12 i3GACK

04 64 04 EPROM J26 J28

~~ 63 g~ 2712s---i----i-·

07 62 07 27256 1 2 08 61 08 27512 2 2 OS 60 OS

010 59 010

011 58 011 F80000-FSFFFF 1'12 10 I'll UPPER BYTE 1'1122 1'10 20 OE CE

1'16 5 AS AS 61'14 1'14 71'13 1'13 : 1'12 1'12 10 I'll 1'1122 1'10 20 OE CE 012 57 012

013 56 013 014 55 014

015 54015r---4-__________________ ~ 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

F80000-F9FFFF LOWER BYTE

J29 A15 ~

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R/WJSo A1121 A10 24 A9 25 A8 3 A7 4 A6 5 AS 6

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A4 7 8

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U28 08-015 U25

A14 1'112 1'111 A10 A9 AS A7 A6 AS A4 A3 A2 Al A0 R/W

1'07 I'06 1,o5 I'04 1'03 1'02 1'01 1'00

A15 1 A14 19015 A13 2 1'112 18 014 23 All 17013 A1121 A10 16012 A10 24 1'19 15011 1'19 25 A8 13010 A8 3 A7 1209 A7 4 A6 1108 AS 5 AS AS 6 A4 A4 7 A3 S A2 9 Al A0

00-07 1'07 19 07 I'06 18 06 1'05 1705 1'04 1604 1'03 15 03 1'02 1302 1'01 12 01 1'00 1100 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

i A21 50 A21

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^II A22 51 A221

I IS116 ' -_ _ _ _ ---'01'<

A23 52 A23 UPPER BYTE

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MK48T02

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5 1 U51 745257 NC 13 4B

NC 14 41'1 4V 12NC NC 10 3B

NC ll 31'1 3Y 9 NC NC 5 21'1 2Y 7 NC

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CLKS

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4

MPUCLK

US0 R32 Rl U60R30 )<>"'-=:.JI.tI/v--R50 ..",S:...-*-_--=-j1 IN

I' T1

"1;T--4AT'~r--;;r-' 2

150 N5 DELAY GATE 3

13 NC ll NC 10 NC 9 NC S NC 7 NC S NC 5

S NC 4

NC 3 NC 2 1

+5 4 ~~~74

20 R05CA5

2

PAL20X10 U40

OE R34

I10

I9010 23 R20 IS 09 22 I7 OS 21 IS 07 20

IS OS 19 14· ^.3 I4 OS lS 13. .4 I3 04 17 12·' .5 I2 03 IS 11. .S I1 02 15 10· .7 CLK 01 14 9.

.

--_ ^..._--_.

.

.S

+5 R35

3 - S

~---+---~CCL 0~----~-NCA5

EXPANSION RAM CONNECTOR

SIDE 8 02 1 oe2 03 3 01 4 GND 5 GND 6 uS 7

(14 8 ['7 9 [,5 10

11 1'1'8 12 • - 13

CON44 J34 SIDE A

1 MA2 2 MAS 3 MA3 4 MAS 5 NLOS

~ ~~~S

e A22 9

AS

R21 R/W1;'lllr-W1

R22 'lllr-W2

LED INDICATORS

~

r - ⁺⁵^R10^~~:^~ - R14 NHALT 1 "U, 9 ~/~---A./>.;

J36 1

MAS

MAS MAS MA7 MA0 MAl MA2 MA3 MA4

POWER HAc.T TEST PReS::

+5

0

C

B

A20

!;

A21 16

10 A23 11 WI 12 CAS 13 +5 14 +5 15 013 16 015 170J2 18 014 19 09 20 011

r---~---PERIPHERAL TECHNOLOGY

____

^~A

17 MA4 IS MA0 19 MA7 20 MA121 MAE. 22 6

2108 22 010

5 4 3

C

1480 TERRELL MILL PO SUITE #870 MARIETTA. GA 30067

PT68K-4

REFRESH LOGIC

SHEET 2 OF -;-

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(17)

8 7 6 5

0

U1S 12

", .,.>~-

00 00 01 01 02 02 03 03 04 04 05 05 06 12 06 07 3 07 A1 4 A0 A2 Ai R/W R/W NRESET 13 fiR

N17721! cs

ClK8 27 ClK

C HC 28 IIURO ^ORO ^U14

~101772

U9 U13

74lS175 7442

05 13

4D 40 15

I

⁰⁰ ¹²^3D ⁴⁰³⁰¹⁴¹⁰

I

⁰⁶ ⁵ ²⁰ ^{30 ~}^{20 (}¹

I 2VI ~

I

⁰¹ ⁴^ID ¹⁰^c. ^-1

I

HiP-

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I

NRESET

b u~~

I

I ^r':i?

I 31'- F U10 ~--'

_ _ _ I.; ~:t-IHR(j7

V'

A

5

4

MC68681

+5 U22

TXOA 30 9 OTACK RXOA 31 NOTACK 21

rna

^RTSA²⁹

NIRQ5 8

R/W CTSA 7 R/W

NRESET 34 RESET N686B1 35 CS

A4 6 11

RS4 TXOS A3 5 RS3 RXOB 10

A2 3 12

RS2 RTSS A1 1 RS1 CTSB 4 07 19 07

06 22 06 05 1B 05 04 23 04

03 17 03 Xl/ClK 32 02 24 02

01 16 01

00 25 00 X2 33 NC

MC6B681 U21

J.lOTACK 9 5TACK

tHR04 21 IRO RdJ 8 R/W tlRE5ET 34 RESET H68681A 35 CS

A4 6 RS4 A3 5 RS3 A2 3 RS2 A1 1 RSI 07 1907 062206 D5 18 05 042304 [/3 17 03 l'Z 24 02 01 16 01

0(125 00

TXOS~I~I~--~--~

RXOB ¹⁰ RTSS 12 eTSB 4

OP3 13 IP2 36 r,l/CLK 32

3. 68t'liE

4

:3

3

2 1

U12 00 44 00 01 45 01 02 46 02 03 47 03 04 48 04

05 1 05 0

06 2 06 3 07 . 07 29 A1 RS1 A2 28 RS2 A3 27 RS3 A4 26 RS4 AS 25 RS5 R/W 43 R/W NO TACK 42 OTACK N68230 41 CS

ClK8 40 ClK NRESET 39 RESET

+5 12 VCC 38 VSS

C

f1C6S230P

B

~ __________________________ ^~A

1480 TERRELL MILL RD -870

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PT68K-4

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(18)

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~

I

!

I

+S RI

8

'UIS 745373

80 19BA7 70 lSBAS SO 15 BAS SO 12BA4 40: BA0 30 S BAI 20 2 8A2 10 8A3 EN OE +5 1 I

UI7 74lS373 AS 18 so

A10 17 70 All14 60 A1213 SO A16 ~ 40 1'115 3D 1'113 4 20 1'114 3 10

80 198 1'18 70 lS BA9 SO IS BA10 SO 12BA11 40 9 ₆ BAIS 30 5 BA14 20 2 BA12 10 BA13

U16 74lS373 .;17 18 80 80 19 BA16 A18 17 7D 70 16 BAJ7 A1S14 6D 60 15 SA18 sD 50 12 SAJ 9 A20 13

RESET ~ ^4D ^{40 S} 7

'11 9 NSRAM 8 NUDS 7 NlOS 6 NKEY 5 I'll 4 NXTMEM 3 NXTIO 2

R/W

3D 30ft .lC2

I IOClK-~ ^2D 201-SlOClK

1

I _ID ₁₀ _AEN

I

+5---11

j

L - - _ UJ9

6 5 4 3

05C _J9 U8

r---~:-o ~GNO +O~

NMR5T

to

^of-GNO

00---=1:.::3OjOH OH' 12 7

14.318 MHZ

R2S NIOR

110 08 NIOW

19 107

18 IOSt-=-'----'l/VIr-NMEMW 17 IS R24

+5 R7

01 14 OG

02 6 OF

03 150E

04 sao

os IS OC

06 'lOB

07 8 OA

NKEY 17 OE

~----~----~---~3 01

+5 9~

r---~~---~---~---r-l~l ClR 18 ClK 19 SE

2 OS s/^p

J10 1 2 3

R8 _-"v'V'v--+5

l'G

16 105 NMEMR

15 I04~IS,,-_______ --, 14 103 14NSRAMl

CLOCK DATA RESET GNO +SV

4 5 13 102 13NSRAMH

12 11 01 12

RESET~

2 C4 3

Cel Q

1

NKEY

U6 74lS175 DRIJPST

I

( 3

J-T

+5 1 IJS

o ^74F74

12 D PR 0 9 3, 68MHZ 11 C Cl opS-j-_-'

J

^'l

+5 3

13 4D 40 15 40 14 12 3D 30 10 30 ¹¹ 5 20 20 7

20 6 -1 lD 10 Co

10 3 C Cl

9 ^'I C6

1

6

z

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PT68K-4

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(19)

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8

SIDE B Jl GNO 1 RSTORLI ;

NIR09~ +5 -5L1 ORQZ;

-lZLI

·OWS 8 +lZLI 10 9

GNO 11 NMEMW lZ

NMEMR 13 NIOW 14 NIOR NOACK3 15

OR03 16 NOACKl 17 OR01 18 NREF 19 BIOCLK 20 NIRQ7A 21 NIR06A 22 NIROSA 23 NIR04A 24 NIR03A 25 NOACK2 26 TC 27 BALE 28 +5£9 OSC 30 GND 31

7

SIDE A SIDE B J2

~ IOCHCK GNO ~

3 B07 RSTDRV 3

B06 +5

4 805 NIR09~

5 B04 -5V 6 B03 OR02;

7 B02 -12V 8 BOI OWS 8 9 800 +12V 9 10 XTWAIT GNO 10 11 AEN NMEMW 11 12 BAl9 NMEMR 12 13 BA18 NIOW 13 14 BA17 NIOR 14 15 BA16 NOACK3 15 16 BA15 OR03 16 17 BA14NOACKl17 18 BA13 OR01 18 19 8A12 NREF 19 20 BAll BIOCLK 20 21 BA10NIR07A 21 22 BA9 NIR06A 22 23 BAS NIROSA 23 24 BA7 NIR04A 24 25 BA6 NIR03A 25 26 BAS NOACK2 26 27 BM TC 27 28 BA3 BALE 28 2'LSA2 +5 29 30 BAI asc 30 3i BAO GNO 31

J21

NIRQ3A-E?~NIRQ3 J22

NIRQ4H~tHR04 J23

IiIRQ5A-E~}-+nRQ5 .324

NIR05A~NIRQ5 J25

tHRJ?A-k' C;:::;-w R07

7

6 5

SIDE A SIDE B J3 SIDE A SIDE B J4 1 IOCHCK GNO 1

2 807 RSTORLI 23

3 B06 +5

~ 80S NIRQ9~

6 804 . -SV 6 B03 ORQ2 7 7 802 -lZV 8 BOI OWS 8 9 B00 . +12V 9 10 XTWAIT GNO 10 11 AEN NMEMW 11 12 8A19 NMEMR 12 13 8A18 NIOW 13 14 BA17 NIOR 14 15 BA16 NOACK3 15 16 BAlS ORQ3 16 17 8A14 NOACK 1 17 18 8Al3 ORQl 18 19 BAIZ NREF 19 20 BAll 8IOCLK 20 21 BA10 NIR07A 21 22 8A9 NIRQ6A 22 23 BA8 NIR05A 23 24 BA7 NIRQ4A 24 25 8A5 NIR03A 25 26 BAS NOACK2 26 27 BA4 TC 27 28 8A3 BALE 28

29 BA2 +5 29

30 BAI OSC 30 31 BAO GND 31

1 IOCHCK GNO 1 2 807 RSTORV 32

3 B06 +5

4 80S NIR09 54

5 B04 -5V

6 B03 ORQZS7 7 B02 -lZV 8 BOI OWS 8 9 B00 +1ZV 910 10 XTLlAIT GNO 11 AEN NMEMLl 11 12 BA19 NMEMR 12 13 BA18 NIOW 13 14 BA17 NIOR 14 15 BA16 NOACK3 15 16 BA15 OR03 16 17 BA14 NOACK 1 17 18 BA13 OR01 18 19 BA12 NREF 19 20 BAll BIOCLK 20 21 BA10 NIR07A 21 22 8A9 NIR06A 22 23 BA8 NIR05A 23 24 BA7 NIR04A 24 25 8A5 NIR03A 25 26 BAS NOACK2 26 27 BA4 TC 27

~BA3 BALE 28

29 BA2 +5 29

30 BAI OSC 30 31 8A0 GND 31

POWER CONNECTOR

+ li'l) -121)- GHD GHD

~s 10 ~,

~~~tJ

+5 11 "

+5 12 :'.

5

4

SIDE A SIDE B JS 1 IOCHCK GNO ~

23 B07 RSTORV 3

806 +5

4 805 NIRQ9 54

5 804 -5V

6 803 ORQ2 67 7 802 -12V 8 801 OLlS 8 9 B00 +l2V 9 10 XTLlAIT GNO 10 11 AEN NMEMW 11 12 BAi9 NMEMR 12 13 BA18 NIOW 13 148A17 NIOR 14 15 8A16 NOACK3 15 16 BAlS OR03 16 17 8A14 NOACK 1 17 18 8A13 ORal 18 19 BA12 NREF 19 20 BAll BIOCLK 20 21 8A10 NIRQ7A 21 22 BA9 NIR06A 22 23 BA8 NIROSA 23 24 BA7 NIR04A 24 2S 8A5 NIR03A 25 26 BAS NOACK2 26 27 BA4 TC 27 28 BA3 8f~LE 28

29 8A2 +5 29

30 BAl 05C 30 31 BAO GND 31

SPEAKER

<1

3

SIDE A SIDE 8 J6

~ IOCHCK GNO ~

3 807 RSTDRV 3

806 +5

4 B05 NIR09 ~

5 804 -5V

6 803 oROZ;

7 B02 -12V 8 BOl OWS 8 9 800 +12V 9 10 XTWAIT GNO 10 11 AEN NMEMW 11 . 12 8A19 NMEMR 12 13 8A18 NIOW 13 14 BA17 NIOR 14 15 8A16 NOACK3 15 16 BA15 oR03 16 17 8A14 NOACKI 17 18 8A13 OROI 18 19 8A12 NREF 19 20 8All 8IOCLK 20 21 8A10 NIRQ7A 21 22 8A9 NIR06A 22 23 8A8 NIROSA 23 24 8A7 NIR04A 24 25 8A6 NIR03A 25 26 8AS NOACK2 26 27 BA4 TC 27

28 8A3 28

29 8A2 8A~~ 29 308Al ose 30 31 8A0 GND 31

2

SIDE A SIDE 8 J7

~ ^IOCHCK ^GNO~

3 B07 RSTORV 3

4 806 +5

5 805 NIRQ9 ~

804 -5V

6 803 OR02;

7 802 -12V 8 801 OWS 8 9 800 +l2V i0 10 XTLlAIT GNO 11 AEN NMEMW 11 12 8A19 NMEMR 12 13 8A18 NIOLl 13 14 BA17 NIOR 14 15 BA16 NOACK3 15 16 8A15 ORQ3 16 17 8A14 NOACKI 17 18 8Al3 OROI 18 19 8A12 NREF 19 20 BAll BIOCLK 20 21 8A10 NIRQ7A 21 22 BA9 NIR06A 22 23 BA8 NIROSA 23 24 BA7 NIRQ4A 24 25 BA6 NIRQ3A 25 26 8AS NOACK2 26

278M TC 27

28 8A3 8ALE 28 29 8A2 +<; 29 30 8A1 ose 30 31 8A0 GNO 31

1

SIDE A

~ IOCHCK 3 807 4 806 5 805 6 804 7 803 8 802 9 801 800 10 XTWAIT 11 AEN 12 BA19 13 8A18 14 BA17 15 BA16 16 BA15 178A14 18 8A13 19 8A12 20 BAll 21 8Al0 22 BA9 23 8AS 248A7 25 BA6 26 BAS 27 BA4 28 8A^"l 298A2 30 BAl 31 BA0

o

c

B

r -___________________________ A

1480 TERRELL MILL RD ^SUITE870 tlARIETTA. GA 30057

PT68K-4

TI ^I

XT 8ACKPL.)NE ^PE,l

PATEl 04/05/90 I SHEET ^~ l'F ^-;

3 2

PERIPHERAL TECHNOLOGY

PT68K4

User's Manual