IEI PSC-586VGA User Manual

PSC-586VGA

ISA/PCI Pentium™ w/ VGA
Single Board Computer

@Copyright 1996
All Rights Reserved.
Manual first edition May 05,1996
The information in this document is subject to change without prior notice in
order to improve reliability, design and function and does not represent a
commitment on the part of the manufacturer.
In no event will the manufacturer be liable for direct, indirect, special,
incidental, or consequential damages arising out of the use or inability to use
the product or documentation, even if advised of the possibility of such
damages.
This document contains proprietary information protected by copyright. All
rights are reserved. No part of this manual may be reproduced by any
mechanical, electronic, or other means in any form without prior written
permission of the manufacturer.

Trademarks

PSC-586VGA is registered trademarks of Acquire Inc.,IBM PC is a registered
trademark of International Business Machines Corporation. Intel is a
registered trademark of Intel Corporation. AMI is registered trademarks of
American Megatrends, Inc. Other product names mentioned herein are used
for identification purposes only and may be trademarks and/or registered
trademarks of their respective companies.

Contents

1. Introduction.................................................................3

1.1 Specifications.........................................................................................4

1.2 What You Have......................................................................................5

2. Installation...................................................................6

2.1 PSC-586VGA's Layout...........................................................................6

2.2 Unpacking..............................................................................................8

2.3 Jumper Description ................................................................................9

2.4 Setting the CPU of PSC-586VGA......................................................... 10

2.5 Upgrade the External Cache.................................................................11

2.6 System Memory DRAM.......................................................................11

2.7 Watch-Dog Timer.................................................................................11

2.8 FDC37C665/ALI M5113 Multi-I/O Chip.............................................. 12

2.9 PCI VGA Controller ............................................................................12

3. Connection................................................................13

3.1 Floppy Disk Drive Connector ............................................................... 13

3.2 IDE Disk Drive Connector....................................................................14

3.3 Parallel Port.........................................................................................15

3.4 Serial Ports ..........................................................................................15

1

3.5 Keyboard Connector .............................................................................16

3.6 External Switches and Indicators..........................................................16

3.7 External Speaker ..................................................................................17

3.8 PS/2 Mouse Port .................................................................................17

3.9 VGA Connector ...................................................................................18

4. AMI BIOS Setup .......................................................19

4.1 Getting Start ........................................................................................19

4.2 Standard Setup.....................................................................................20

4.3 Advanced Setup ...................................................................................21

4.4 Chipset Setup....................................................................................... 23

4.5 Peripheral Setup...................................................................................25

4.6 Power Management Setup....................................................................26

Appendix A. Watch-Dog Timer .....................................27

2

1

Introduction

Welcome to the PSC-586VGA ISA/PCI Pentium w/VGA Single
Board Computer. The PSC-586VGA board is an ISA/PCI

factor board, which comes

Pentium CPU and advanced high performance multi-mode I/O,
designed for the system manufacturers, integrators, or VARs
that want to provide all the performance, reliability, and quality
at a reasonable price.

An advanced high performance super AT I/O chip SMC
FDC37C665 or ALI M5113 is used in the PSC-586VGA board.
Both on-chip UARTs are compatible with the NS16C550. The
parallel port and IDE interface are compatible with IBM PC/AT
and XT architecture's. The FDC37C665 or M5113 incorporates
sophisticated power control circuitry(PCC). The PCC supports
multiple low power down modes.

The on board VGA controller is Cirrus CL-GD54M30 graphics
accelerator. The VGA controller based on the internal PCI bus
to get the most high performance. User will not need extra
VGA card to release one PCI slot for other application.

equipped with high performance

form

In addition, the PSC-586VGA provides four 72-pin SIMM sockets for
its on-board DRAM. The 72-pin accepts 1MB, 2MB, 4MB, 8MB,
16MB, and 32MB SIMM. So, the total on-board memory can be
configured from 2MB to 128MB.

PSC-586VGA uses the ALI chipset, M1511/M1512/M1513,
which are 100% ISA/PCI compatible chipset.

3

1.1 Specifications :

The PSC-586VGA ISA/PCI Pentium w/ VGA Single Board Computer
provides the following specification:

• CPU : Pentium 75-166Mhz

• Bus : ISA bus and PCI 32-bit local bus

• DMA channels : 7

• Interrupt levels : 15

• Chipset : M1511/M1512/M1513

• Real-time clock/calendar : DS-12887 chip and quartz oscillator,

128B CMOS memory, powered by lithium battery for over 10 years
of data retention.

• RAM memory : 2MB to 128MB,EDO and standard DRAM supported

• Second Cache memory : 256KB/512KB/1MB Pipelined Burst and

Standard Cache RAM Module

• E-IDE hard disk drive interface : up to four PCI Ehnace IDE hard

drives.

• Floppy disk drive interface : two 2.88 MB, 1.44MB, 1.2MB, 720KB,

or 360KB floppy disk drives.

• Two high speed Series ports : NS16C550 compatible UARTs

• Bi-directional Parallel Port

• VGA Controller - GD54M30 :

Bus : PCI bus
Resolution : 1024x768 - 16 color(512KB VRAM)
256 color(1MB VRAM)
1280x1024 - 16 color(1MB VRAM)
Feature Connector : 26-pin hearder on board

4

• Watch-dog timer : can be set by 1,2,10,20,110 or 220 seconds

period. Reset or NMI was generated when CPU did not periodically
trigger the timer. Your program use hex 043 and 443 to control the
watch-dog and generate a system reset.

• Keyboard connector

• Mouse : PS/2 Mouse Port on-board.

• Power Consumption : +5V @ 4.2A ( Pentium-100,16MB EDO RAM)

±12V @ 15mA ( for RS-232 only)

• Operating Temperature : 0° ~ 60° C ( CPU needs Cooler)

1.2 What You Have

In addition to this

User's Manual

, the PSC-586VGA package

includes the following items:

• PSC-586VGA ISA/PCI Pentium w/ VGA Single Board
Computer

• RS-232/Printer Cable

• FDD/HDD Cable

• VGA utility diskette

• 6-pin Mini-Din to 5-pin Din Keyboard Adapter Cable

If any of these items is missing or damaged, contact the dealer
from whom you purchased the product. Save the shipping
materials and carton in case you want to ship or store the
product in the future.

5

2

Installation

This chapter describes how to install the PSC-586VGA. At first,
the layout of PSC-586VGA is shown, and the unpacking
information that you should be careful is described. The
jumpers and switches setting for the PSC-586VGA's
configuration, such as CPU type selection, system clock setting,
and watch dog timer, are also included.

2.1 PSC-586VGA's Layout

< reference next page >

6

2.2 Unpacking

7

Your PSC-586VGA Single Board Computer contains sensitive
electronic components that can be easily damaged by static electricity.

In this section, we describe the precautions you should take while
unpacking, as well as during installation. It is very important that the
instructions be followed correctly, to avoid static damage, and to
successfully install the board.

The system board should be done on a grounded anti-static mat. The
operator should be wearing an anti-static wristband, grounded at the
same point as the anti-static mat.

Inspect the cardboard carton for obvious damage. Shipping and
handling may cause damage to your board. Be sure there are no
shipping and handing damages on the board before processing.

After opening the cardboard carton, exact the system board and place
it only on a grounded anti-static surface component side up.

Again inspect the board for damage. Press down on all the socketed
IC's to make sure that they are properly seated. Do this only with the
board place on a firm flat surface.

Note : DO NOT APPLY POWER TO THE BOARD IF IT HAS BEEN

DAMAGED.

You are now ready to install your PSC-586VGA Single Board
Computer.

8

2.3 Jumper Description

You can change the PSC-586VGA's configuration by setting jumper
switches on the board. The board's jumpers are preset at the factory.
Under normal circumstances, you should not need to change the
jumper settings.

A jumper switch is
plastic cap inserted over two pins of the jumper). A jumper is
with the plastic cap inserted over one or no pin(s) of the jumper.
Figure 2.2 below shows different jumper settings which will be used in
this chapter.

1

2

3

(sometimes referred to as shorted with the

closed

CLOSED OPEN

1

1

1-2

1

2

3

1-2

2-3

Figure 2.2

open

2-3

1

2

3

2-4

9

2.4 Setting the CPU of PSC-586VGA

• CPU Clock Setting :

CPU Clock/Operation JP6 JP8 JP10

1-2

50Mhz/ - 75

OPEN OPEN CLOSE CLOSE

JP10
3-4

* 60Mhz/ - 90 OPEN OPEN CLOSE OPEN
66Mhz/ -100
60Mhz/ -120
66Mhz/ -133
60Mhz/ -150
66Mhz/ -166

(*) : default setting

OPEN OPEN OPEN CLOSE
CLOSE OPEN CLOSE OPEN
CLOSE OPEN OPEN CLOSE
CLOSE CLOSE CLOSE OPEN
CLOSE CLOSE OPEN CLOSE

• CPU Voltage Selection - 2.5V, 2.9V, 3.3V,or 3.45V

Please note the 2.5V/2.9V is designed for the future dual
supply CPU operation. The dual supply CPU requires 2.5V
for CPU core logic and 3.3V for I/O.

CPU Voltage JP3 JP4 JP5

2.5V

1-2

(P55C)

2.9V

1-2

* 3.3V 1-2

3.45V

(*) : default setting

2-3

7 - 8
9 - 10
11 - 12
7 - 8
9 - 10
11 - 12

1 - 2
3 - 4
5 - 6

1 - 2
3 - 4
5 - 6

2-3

1-2

2-3

2-3

• CPU type setting (reserved) :

CPU Type JP7
*P54C/K5

M1

OPEN
CLOSE

10

(*) : default setting

2.5 Upgrade the External Cache

The PSC-586VGA designed pipelined burst Cache RAM
slot to accept 256KB,512KB,1MB Cache RAM module.
The slot is U3. When you install the Cache RAM module,
please try to test it before you buy it. Because some Cache
RAM module‘s quality and performance is no good,will possible
have compatible problem. And please set the cache
RAM module to Async. or Sync. jumper setting correctly.

Cache Type JP1 JP2
Async. Cache

* Sync. Cache 2-3 CLOSE

(*) default setting

1-2 OPEN

2.6 System Memory DRAM(EDO RAM supported)

There are four 72-pin SIMM sockets to accept
1MB,2MB,4MB,8MB,16MB,or 32MB memory modules.
The total capacity is from 2MB to 128MB
Customers have to install
SIMM Socket 1,2 or 3,4.
From left side to right side,the SIMM sockets are

SIMM 3,SIMM 2,SIMM 4.

at least 2pcs RAM module on board

.

SIMM 1,

,

2.7 Watch-Dog Timer

The Watch-Dog Timer is enabled by reading port 443H. It should be
triggered before the time-out period ends, otherwise it will assume the
program operation is abnormal and will issue a reset signal to start
again, or activate NMI to CPU. The Watch-Dog Timer is disable by
reading port 043H.

• JP13 : Watch-Dog Active Type Setting

JP13 DESCRIPTION

* 1-2 RESET WHEN WDT TIME-OUT

11

2-3 ACTIVATE NMI TO CPU WHEN WDT TIME-OUT
OPEN DISABLE WDT

(*): default setting

• JP16: WDT Time-Out Period

PERIOD 1-2 3-4 5-6 7-8

1 sec. OPEN OPEN CLOSE OPEN
2 sec. OPEN OPEN CLOSE CLOSE

*10 sec. OPEN CLOSE OPEN OPEN

20 sec. OPEN CLOSE OPEN CLOSE
110 sec. CLOSE OPEN OPEN OPEN
220 sec. CLOSE OPEN OPEN CLOSE

(*) : default setting

2.8 FDC37C665/ALI M5113 Multi-I/O Chip

The PSC-586VGA equipped with super multi-I/O chip SMC
FDC37C665 or ALI M5113, you can select JP14 or JP15 to enable or
disable the multi-I/O Chipset.

• JP14/JP15 : Multi-I/O Chipset Setting

Enable/Disable MIO JP14 JP15
* Enable FDC37C665

Disable FDC37C665
* Enable M5113
Disable M5113

(*) : default setting

OPEN OPEN
CLOSE OPEN
OPEN 1-2
CLOSE 2-3

2.9 PCI VGA Controller

The PSC-586VGA have built-in Cirrus GD54M30 PCI VGA
Controller. If you want to use the external VGA Card,PCI or ISA
bus,the BIOS will automatic disable the on board VGA controller
and to use the external one.

To get more VGA drivers information,please refer the Cirrus
Internet address :

WWW.CIRRUS.COM

12

Or BBS at Taiwan : Cirrus -

-

886 2 7185173

886 2 5147675

3

Connection

This chapter describes how to connect peripherals, switches and
indicators to the PSC-586VGA board.

3.1 Floppy Disk Drive Connector

PSC-586VGA board equipped with a 34-pin daisy-chain driver
connector cable.

• CN8 : FDC CONNECTOR

PIN NO. DESCRIPTION PIN NO. DESCRIPTION

1 GROUND 2 REDUCE WRITE
3 GROUND 4 N/C
5 GROUND 6 N/C
7 GROUND 8 INDEX#

9 GROUND 10 MOTOR ENABLE A#
11 GROUND 12 DRIVE SELECT B#
13 GROUND 14 DRIVE SELECT A#
15 GROUND 16 MOTOR ENABLE B#
17 GROUND 18 DIRECTION#
19 GROUND 20 STEP#
21 GROUND 22 WRITE DATA#
23 GROUND 24 WRITE GATE#
25 GROUND 26 TRACK 0#
27 GROUND 28 WRITE PROTECT#
29 GROUND 30 READ DATA#
31 GROUND 32 SIDE 1 SELECT#
33 GROUND 34 DISK CHANGE#

13

3.2 PCI E-IDE Disk Drive Connector

You can attach four IDE( Integrated Device Electronics) hard disk
drives to the PSC-586VGA IDE controller.

CN7(IDE 1) : Primary IDE Connector
CN6(IDE 2) : Secondary IDE Connector

• CN6/CN7: IDE Interface Connector

PIN NO. DESCRIPTION PIN NO. DESCRIPTION

1 RESET# 2 GROUND
3 DATA 7 4 DATA 8
5 DATA 6 6 DATA 9
7 DATA 5 8 DATA 10

9 DATA 4 10 DATA 11
11 DATA 3 12 DATA 12
13 DATA 2 14 DATA 13
15 DATA 1 16 DATA 14
17 DATA 0 18 DATA 15
19 GROUND 20 N/C
21 N/C 22 GROUND
23 IOW# 24 GROUND
25 IOR# 26 GROUND
27 N/C 28 BALE - DEFAULT
29 N/C 30 GROUND - DEFAULT
31 INTERRUPT 32 IOCS16#-DEFAULT
33 SA1 34 N/C
35 SA0 36 SA2
37 HDC CS0# 38 HDC CS1#
39 HDD ACTIVE# 40 GROUND

14

3.3 Parallel Port

This port is usually connected to a printer, The PSC-586VGA includes an
on-board parallel port, accessed through a 26-pin flat-cable connector
CN10.

• CN10 : Parallel Port Connector

PIN NO. DESCRIPTION PIN NO. DESCRIPTION

1 STROBE# 2 DATA 0
3 DATA 1 4 DATA 2
5 DATA 3 6 DATA 4
7 DATA 5 8 DATA 6

9 DATA 7 10 ACKNOWLEDGE
11 BUSY 12 PAPER EMPTY
13 PRINTER SELECT 14 AUTO FORM FEED #
15 ERROR# 16 INITIALIZE
17 PRINTER SELECT LN# 18 GROUND
19 GROUND 20 GROUND
21 GROUND 22 GROUND
23 GROUND 24 GROUND
25 GROUND

3.4 Serial Ports

The PSC-586VGA offers two high speed NS16C550 compatible UARTs
with Read/Receive 16 byte FIFO serial ports.

• CN14 : Serial Port DB-9 Connector( ACE0 )

PIN NO. DESCRIPTION

1 DATA CARRIER DETECT (DCD)
2 RECEIVE DATA (RXD)
3 TRANSMIT DATA (TXD)
4 DATA TERMINAL READY (DTR)
5 GROUND (GND)
6 DATA SET READY (DSR)
7 REQUEST TO SEND (RTS)
8 CLEAR TO SEND (CTS)
9 RING INDICATOR (RI)

15

• CN13 : Serial Port 10-pin Header( ACE1)

Pin No. Description Pin No. Description
1 DCD 2 DSR

3 RXD 4 RTS
5 TXD 6 CTX
7 DTR 8 RI
9 GND 10 NC

3.5 Keyboard Connector

The PSC-586VGA provides two keyboard connectors.

• CN5 : 5-pin Header Keyboard Connector

PIN NO. DESCRIPTION

1 KEYBOARD CLOCK
2 KEYBOARD DATA
3 N/C
4 GROUND
5 +5V

• CN15 : 6-pin Mini-DIN Keyboard Connector

PIN NO. DESCRIPTION

1 KEYBOARD DATA
2 N/C
3 GROUND
4 +5V
5 KEYBOARD CLOCK
6 N/C

3.6 External Switches and Indicators

There are many external switches and indicators for monitoring and
controlling your CPU board.

16

• CN1 : POWER LED & KEYLOCK

PIN NO. DESCRIPTION

1 POWER LED ANODE
2 KEY
3 GROUND
4 KEYLOCK
5 GROUND

• CN3 : RESET BUTTON

PIN NO. DESCRIPTION

1 EXTERNAL RESET
2 GROUND

• CN4 : IDE LED connector

PIN-NO DESCRIPTION

1 +5V
2 HDD ACTIVE#

3.7 External Speaker

The PSC-586VGA has its own buzzer, you also can connect to the
external speaker through the connector CN2.

• CN2 : Speaker Connector

PIN NO. DESCRIPTION

1 SPEAKER SIGNAL
2 NC
3 GROUND
4 +5V

3.8 PS/2 Mouse 6-pin Mini-DIN Connector

• CN12 : PS/2 Mouse Connector

PIN NO. DESCRIPTION

1 MS DATA
2 NC
3 GROUND
4 +5V
5 KBT1
6 NC

17

3.9 VGA Connector

The PSC-586VGA built-in 15pin VGA connector directly to
your CRT monitor and a 26-pin header Feature Connector
for any speical application,for example to drive EL flat panel.

• CN11 : 15-pin Female VGA Connector

1 RED 2 GREEN
3 BLUE 4 NC
5 GROUND 6 GROUND
7 GROUND 8 GROUND

9 NC 10 GROUND
11 NC 12 NC
13 HSYNC 14 VSYNC
15 NC

• CN9 : 13x2 26-pin Video Feature Connector

1 Ground 14 PD0
2 Ground 15 PD1
3 Ground 16 PD2
4 Select Internal Video 17 PD3
5 Select Internal Sync 18 PD4
6 Select Internal Dot Clock 19 PD5
7 Not Used 20 PD6
8 Ground 21 PD7

9 Ground 22 DAC Clock
10 Ground 23 DAC Blanking
11 Ground 24 Horizontal Sync
12 Not Used 25 Vertical Sync
13 Not Used 26 Ground

18

4

AMI BIOS Setup

The PSC-586VGA uses the AMI PCI/ISA BIOS for system
configuration. The AMI BIOS setup program is designed to provide
maximum flexibility in configuring the system by offering various
options which may be selected for end-user requirements. This chapter
is written to assist you in the proper usage of these features.

4.1 Getting Start

When power on the system, the BIOS will enter the Power-On-Self­Test routines. These routines will be executed for system test and
initialization and system configuration verification. After the POST
routines are completed, the following message appears :

To access AMI PCI/ISA BIOS Setup program, press <Del> key. The
following screen will be displayed at this time.

" Hit DEL if you want to run SETUP"

19

4.2 Standard Setup

The Standard Setup is used for basic hardware system
configuration. The main function is for Date/Time setting and
Floppy/Hard Disk Drive setting.Please refer the following screen for
this setup.

When the IDE hard disk drive you are using is larger than
528MB,please set the HDD mode to
Please use the IDE Setup Utility in BIOS SETUP to install
the HDD correctly.

Mode Setting for >528MB IDE HDD

mode.

LBA

20

4.3 Advanced Setup

This advanced setup is designed for customer‘s tuning best
performance of the PSC-586VGA board. As for normal operation
customers don‘t have to change any default setting.The default setting
is pre-setted for most reliable operation.Please refer the following
screen for the Advanced Setup.

21

22

System Keyboard :

Absent/Present

when power on system.

Primary Display :

Absent
VGA/EGA,CGA40x25,CGA80x25,or Mono

different display device.

Mouse Support :

Enable/Disable

When use the PS/2 mouse will use the IRQ12.

Video Shadow C000,32K:

Enable

Shadow C8000-CFFFF,D0000-D7FFF,& D8000-DFFFF :

When the installed add-on card‘s ROM address is as
above address,you could enable the shadow to get higher
operation performance.When you enable the shadow
function,it will also reduce the memory available by between
640KB and 1024KB.

- Will not check display card when power on system.

- Will increase the video speed.

- Will check or not check the keyboard exist

- Options for

- Turn on the PS/2 mouse function.

4.4 Chipset Setup

This setup functions are almostly working for ChipSet(ALI
M1511/M1512/M1513). These options are used to change the
ChipSet‘s registers. Please carefully change any default setting
,otherwise the system could be running un-stable.

23

AT Bus Clock :

7.16Mhz :

clock even installed different speed CPU.

CLK/4,5,6,8,10,12 :

The default setting will be fixed at 7.16Mhz bus

CPU clock(50MHz,60MHz,or 66Mhz,

24

dependent on different CPU speed) divides 4,5,6,8,10,or 12 to
get the AT Bus Clock.

Parity error check for chipset :

Enable/Disalbe :

Usually the DRAM module did not have parity function now.

4.5 Peripheral Setup

This setup is almost working for Multi-I/O Chip(ALI M5113 or
SMC37C665). These options are used to change the ChipSet‘s
registers. Please carefully change any default setting to meet your
application need perfectly.

BIOS check the DRAM parity or not.

25

Programming Mode :

- Setting the following ports on default value

Auto

OnBoard FDC : Enable
OnChip IDE : Enable
Serial Port1 : 3F8H
Serial Port2 : 2F8H
Parallel Port : 378H

Manual

setting.
OnBoard FDC : Enable/Disable
OnChip IDE : Enable/Disable
Serial Port1 : Disable/3F8H/3E8H/2E8H
Serial Port2 : Disable/2F8H/3E8H/2E8H
Parallel Port : Disable/3BCH/378H/278H

- customers choose the following ports‘ optional

4.6 Power Management Setup

Power Management Setup help user handles the PSC-586VGA
board‘s “green” function. The features could shut down the video
display and hard disk to save energy for example. The power
management setup screen is as following,

26

Appendix A. Watch-Dog Timer

The Watch-Dog Timer is provided to ensure that standalone systems
can always recover from catastrophic conditions that caused the CPU
to crash. This condition may have occurred by external EMI or a
software bug. When the CPU stops working correctly, hardware on the
board will either perform a hardware reset (cold boot) or a non­maskable interrupt (NMI) to bring the system back to a known state.

The Watch-Dog Timer is controlled by two I/O ports.

443
(hex)
043
(hex)

To enable the Watch-Dog Timer, a read from I/O port 443H must be
performed. This will enable and activate the countdown timer which
will eventually time out and either reset the CPU or cause an NMI
depending on the setting of JP13. To ensure that this reset condition
does not occur, the Watch-Dog Timer must be periodically refreshed
by reading the same I/O port 433H. This must be done within the time
out period that is selected by jumper group JP16.

A tolerance of at least 30% must be maintained to avoid unknown
routines within the operating system (DOS), such as disk I/O that can

Read Enable the refresh the Watch-Dog Timer.

Read Disable the Watch-Dog Timer.

27

be very time consuming. Therefore if the time out period has been set
to 10 seconds, the I/O port 443H must be read within 7 seconds.

Note: when exiting a program it is necessary to disable the Watch-Dog

Timer, otherwise the system will reset.

28

10 REM EXAMPLE PROGRAM
11 REM WATCH-DOG TIMER == WDT
20 GOSUB 5000 REM ENABLE AND REFRESH THE WDT
30 GOSUB 1000 REM TASK 1, 2 SECS
40 GOSUB 5000 REFRESH THE WDT
50 GOSUB 2000 REM TASK 2, 3 SECS
60 GOSUB 6000 REM DISABLE THE WDT
70 GOSUB 3000 REM TASK 3, 5 SECS
80 GOSUB 5000 REM ENABLE AND REFRESH THE WDT
90 GOTO 30

1000 REM SUBROUTINE #1

2 SECONDS TO COMPLETE

1070 RETURN

2000 REM SUBROUTINE #2

3 SECONDS TO COMPLETE

2070 RETURN

5000 REM SUBROUTINE TO ENABLE AND RESET WDT
5010 X = INP( &H443) REM ENABLE AND REFRESH TIMER
5020 RETURN

6000 REM SUBROUTINE TO DISABLE THE WDT
6010 X = INP( &H43) REM RESET WDT
6020 RETURN

29