RIGHT. FROM THE START RIGHT. FROM THE START RIGHT. FROM THE START RIGHT. FROM THE START RIGHT. FROM THE START Roadrunner 030 and 040 RIGHT. FROM THE START RIGHT. FROM THE START AM-2000M Upgrade Installation Instructions RIGHT. FROM THE START RIGHT. FROM THE START RIGHT. FROM THE START RIGHT. FROM THE START RIGHT. FROM THE START RIGHT. FROM THE START RIGHT. FROM THE START PDI-00172-40, Rev.
1995 Alpha Microsystems REVISIONS INCORPORATED REVISION A00 A01 A02 A03 A04 A05 DATE December 1993 January 1994 February 1994 June 1994 July 1994 December 1994 Roadrunner 030 and 040 AM-2000M Upgrade Installation To re-order this document, request part number PDI-00172-40. The information contained in this manual is believed to be accurate and reliable. However, no responsibility for the accuracy, completeness or use of this information is assumed by Alpha Microsystems.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Page i TABLE OF CONTENTS 1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 GENERAL PRODUCT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page ii Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade 11.3 Connecting the 50-Pin SCSI Interface Cable . . . . . . . . . . . . . . . . . . . . . 11.4 Connect DC Power Cable to the Roadrunner Board . . . . . . . . . . . . . . . 29 29 12.0 BOOTING THE NEW ROADRUNNER HARDWARE . . . . . . . . . . . . . . . . . . . . 29 13.0 INITIAL SYSTEM TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.1 Making a Roadrunner Compatible Warm Boot Tape . . . . .
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Page 1 1.0INTRODUCTION The Roadrunner product kit described in this document is designed for upgrading Alpha Micro’s AM-2000M computer. There are three types of Roadrunner boards available: the MC68EC030 based AM-172 board; the MC68040 based 66MHz AM-174 board; and the MC68040 based 80MHz AM-174 board.
Page 2 Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Depending on your order, some SCSI disk drives are factory loaded with a bootable copy of Roadrunner compatible AMOS software. If you ordered a SCSI disk drive without the factory loaded software or if you choose to use your existing drive, you will need to download and configure a Roadrunner compatible AMOS operating system using the instructions found in Appendix C at the end of this document. 2.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Page 3 b.40MHz bus clock rate. c.80MHz CPU clock rate. d.4KB internal instruction cache e.32KB external cache. f.One on-board (SIMM) single inline memory module expansion slot, which supports 4, 8, 16, and 32 megabyte 60ns DRAMs. 4.Features applicable all Roadrunner boards: a.32-bit bidirectional data path. b.32-bit address path. c.Seven interrupt levels with vector capability. d.DMA channel capability. e.
Page 4 Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade 3.0MECHANICAL REQUIREMENTS The Roadrunner product kit included with this document is mechanically compatible with all versions of the AM-2000M computer. 4.0COMPATIBILITY The next two sections on Roadrunner hardware and software compatibility are important and should be carefully read before proceeding with your installation. 4.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Page 5 5.0ROADRUNNER SCSI TAPE AND HARD DISK DRIVE REQUIREMENTS Roadrunner has an on-board high performance SCSI interface incorporated into its design. To insure a successful installation, you should carefully read the next few sections dealing with SCSI peripherals and Roadrunner compatibility. The Roadrunner’s on-board high performance SCSI interface supports both SCSI-1 and SCSI-2 hard disk and magnetic tape devices.
Page 6 Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade TORX SCREWS Make sure the notch in the chip (indicating pin-1) points toward the rear of the drive. FIRMWARE PROM LOCATION MAC860 AM-626 PROM Installation 3.AM-627 and AM-628 Tandberg SCSI tape drives also require a firmware update to be SCSI-2 compatible. However, these drives use a flash ROM for their firmware, which can be updated without removing the drive from the computer.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Page 7 The program will prompt you for the name of the device, enter: STR0: RETURN The firmware on the tape drive will automatically be updated for SCSI-2 operation; it takes about one minute and the AMOS prompt will re-appear. In order for the firmware update to take affect, you must power the computer down and then turn the power on again. With the computer up and running, your tape drive will now be SCSI-2 compatible.
Page 8 Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade includes a Tandberg tape drive, make sure the bootable hard disk and the tape drive are attached to the same bus. The configuration will not be functional if the tape drive is connected to the SASI port on the AM-145 board and the bootable disk drive is attached to the Roadrunner’s SCSI port.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Page 9 6.0SCSI DISPATCHER In order to use the Roadrunner’s on-board high performance SCSI controller, you must define the "SCSI Dispatcher" in your system initialization command file. AMOS uses the dispatcher to communicate with the SCSI controller chip. All communications with the SCSI controller chip are handled by the dispatcher. There are two versions of the SCSI dispatcher. SCZRR.
Page 10 Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade 7.1Installing Memory Special care must be taken when installing a SIMM module. The figure below shows how the curve in the SIMM module must align with pin-1 on the Roadrunner’s SIMM connector. The SIMM must be inserted into the connector at a slight angle and after you feel the SIMM module settle into the connector, you rotate the SIMM into an upright position, as shown in the illustration.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade MAKE SURE THIS CURVE IN THE SIMM CARD ALIGNS WITH PIN-1 IN THE SIMM CONNECTOR. SIMM (SINGLE INLINE MEMORY MODULE) METAL RETAINER CLIP MC1059 METAL RETAINER CLIP SIMM CONNECTOR PIN-1 INDICATOR Roadrunner SIMM Module Installation PDI-00172-40, Rev.
Page 12 Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade 8.0CONFIGURING ROADRUNNER AND AM-986 BOARDS The next three sections supply jumper configuration information for the Roadrunner AM-172 and AM-174 boards, as well as the AM-986 board. The illustrations show the configuration jumpers for each printed circuit board set in their factory default positions. 8.1Roadrunner AM-172 Board Configuration The illustration below shows the AM-172 board configured as shipped by Alpha Micro.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Page 13 8.2Roadrunner AM-174 Board Configuration The illustration below shows the AM-174 board configured as shipped by Alpha Micro. The only user configurable jumpers on this board are the JP11, JP12, and JP13 memory configuration jumpers. These jumpers only need to be reconfigured if you change the amount of memory installed in your computer. All other jumpers on the board should be left in their factory configured positions.
Page 14 Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade 8.3Boot PROM Removal and Installation The type of socket used for the boot PROM on your Roadrunner board requires a special IC removal tool. See the illustration below for more information: WARNING! The boot PROM IC used on Roadrunner boards requires a specialized tool for its removal. If you attempt to remove the boot PROM using a screwdriver or pocketknife, you could easily damage both the chip and the socket.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Page 15 8.4AM-986 Configuration The AM-986 board, which attaches to the AM-145 CPU board, only has one jumper. The jumper is factory installed at location JP1 and should not be removed. Also, you must install the bracket (DWF-20538-00) used to secure the AM-986 to the AM-145 board as indicated in the illustration.
Page 16 Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade 9.0INSTALLING THE AM-986 BOARD With the AC power cord unplugged and the top cover removed, the components inside your computer are vulnerable to damage caused by static discharge. Your body and clothing are capable of storing an electrical charge that can damage or destroy unprotected electronic components. Prior to handling any computer hardware, make sure your work area is properly protected against static discharge.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Page 17 However, AM-145 boards manufactured prior to July of 1990 may not include the nylon standoff, in which case a 1/2" 4-40 nylon standoff and two 4-40 nylon screws are included in the installation kit. To install the standoff: a.Remove the phillips-head screws holding the AM-145 board to the chassis. b.Remove the hex-screws holding the I/O connectors to the rear panel. c.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade J11 MEMORY CONNECTORS NOT SUPPORTED WITH ROADRUNNER HARDWARE J7 J6 BATTERY J8 Remove the bracket holding your memory board or boards in place. Remove your old memory boards. J5 With a small flat blade screw driver, gently pry out the 68020 CPU chip located at U127. It is not necessary to remove the boot PROMs located at U125 and U126. 145-01 U128 Remove the screw at this location.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Page 19 9.A 121-pin socket was installed on the bottom of the AM-986 board prior to shipment. This socket gives the AM-986 board added height so that it does not come in contact with other components on the AM-145 board. During shipment, the pins on the socket are protected with a piece of conductive foam. Before you install the AM-985, remove the foam and make sure no foam residue remains stuck to any of the pins. 10.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade J11 MEMORY CONNECTORS NOT SUPPORTED WITH ROADRUNNER HARDWARE J7 J6 BATTERY J8 J5 REINSTALL 6-32 SCREW AM-986 ALPHA MICROSYSTEMS JP1 P1 P2 U128 J4 AM-986 BOARD J1 INSTALL 4-40 NYLON SCREW AT THIS LOCATION J16 J2 Page 20 AM-145 J9 J13 J12 J15 J14 J21 J20 SW1 MAC954 Installing the AM-986 Board PDI-00172-40, Rev.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Page 21 11.Once the AM-986 board is properly seated in its connector on the AM-145 board, install the 4-40 nylon screw as indicated. Do not over tighten the nylon screw. 12.Install the phillips-head screw that secures the AM-986 mounting bracket to the AM-145 board. 10.0INSTALLING YOUR ROADRUNNER BOARD Before you install your Roadrunner, make sure the board is configured properly for your configuration.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade J11 BATTERY J8 In order to install the Roadrunner mounting bracket, these four phillips-head screws must be removed. J7 J6 J5 AM-986 ALPHA MICROSYSTEMS JP1 P1 P2 U128 J4 J1 AM-986 BOARD J16 J2 Page 22 AM-145 J9 J13 J12 J15 J14 J21 J20 SW1 MAC961 Installing the 1" Standoffs PDI-00172-40, Rev.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Page 23 J11 BATTERY The Roadrunner board set on top of these four standoffs. The DWF-20748-00 bracket is held in place with four 6-32 phillips-head screws. AM-986 ALPHA MICROSYSTEMS JP1 P1 P2 U128 J1 AM-986 BOARD J2 J16 AM-145 J9 J13 J12 J15 J14 J21 J20 SW1 MAC962 Installing the Roadrunner Mounting Bracket PDI-00172-40, Rev.
Page 24 Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade JP17 JP16 JP18 ROADRUNNER BOARD DWB-00172-00 REV. XXX J11 Install a 6-32 phillips-head screw at each of these four locations.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Page 25 11.034-PIN X-BUS CABLING PRECAUTIONS Up to this point, the installation instructions for AM-172 and AM-174 Roadrunner boards have been exactly the same. However, the installation of the 34-pin X-bus cables is not the same. This difference becomes important in configurations where an AM-172 (030 based) Roadrunner board is being replaced with an AM-174 (040 based) board.
JP17 JP18 Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade JP16 Page 26 DWB-00172-00 REV. XXX J11 JP19 JP15 PIN-1 JP5 J7 BATTERY 030 J8 J6 J5 JP6 J6 J5 JP4 N C R JP3 J2 J1 J3 JP1 JP2 JP1 PIN-1 U128 J16 J2 Both 34-pin cables are routed and folded together. All cable connections must be made pin-1 to pin-1. Use the embossed arrow on each of the 34-pin cable connectors as a pin-1 reference.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Page 27 11.2AM-174 to AM-986 34-Pin X-bus Cabling Instructions If you are performing a Roadrunner 030 to 040 upgrade, you should completely remove the two 34-pin X-bus cables from your computer and then reinstall them based on the instructions in this section. As mentioned earlier, X-bus cabling for the Roadrunner 030 and 040 boards is not the same.
Page 28 Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade INSTALLING THE FIRST 34-PIN CABLE DWB-00174-00 REV. XXX BATTERY 040 PIN-1 J3 J2 CONNECTS TO J3 There are two 34-pin cables in your product installation kit that create a data path between the AM-174 and AM-986 boards. One cable connects between the AM-174's J3 connector and the AM-986's P2 connector. The other cable connects between the AM-174's J2 connector and the AM-986's P1 connector.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Page 29 11.3Connecting the 50-Pin SCSI Interface Cable Your computer’s existing 50-pin SCSI interface cable does not have to be replaced. However, because the cable is not quite long enough to reach the SCSI port on the Roadrunner, a short extension cable (part number DWB-10313-00) has been included in your installation kit.
Page 30 Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade 13.0INITIAL SYSTEM TESTING After installation is complete, run the Roadrunner Self Test program to make sure each subsystem is functional. The self test diagnostics are incorporated into the boot PROM on the Roadrunner. Refer to the Alpha Micro Self Test User’s Guide for instructions. Once you have completed self test, press the reset button and wait for the computer to boot.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Page 31 LOG SYS: RETURN WRMGEN RETURN Warm Boot Monitor Generator X.X(XXX) Input monitor: AMOS32.MON RETURN System disk driver: SCZRR.DVR RETURN Number of logical units: 10 RETURN Bitmap size: 3969 RETURN Language definition table name: RETURN ;Pressing RETURN defaults to English SCSI dispatcher (RETURN if none): SIMRR.SYS RETURN System terminal interface driver: AM145.
Page 32 Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade 14.0OPERATIONAL NOTES Under normal operating conditions, the RUN light on AM-2000M computers (without Roadrunner hardware installed) will remain lit at all times. With the Roadrunner hardware installed and the system booted, you’ll notice the RUN light on your computer’s front panel may not be lit.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Page 33 Table 1. Front Panel Status Codes Generated by the Monitor CODE MEANING 4 System is out of QUEUE blocks. 8 A/C power dropped below an acceptable level. 9 Memory parity error. 10 An interface driver (.IDV) defined in a TRMDEF statement in the system initialization command file was not found in account [1,6] on the boot device. 11 A terminal driver (.
Page 34 Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Table 2 (Continued) CODE MEANING 22 The system is generating a checksum of the instructions in Random Access Memory. If this calculated checksum doesn’t match the checksum coded into the instructions themselves, you see a "2E" error code. x3 The system is initializing the boot device. If the boot stops at this point, it may indicate a hardware problem with the boot device.
Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade Page 35 Table 2 (continued) CODE MEANING xb The system is beginning to execute the AMOS monitor program. If an error occurs at this point, try reloading the latest version of the system software. xd System bootup failed because of a time-out error. This code may indicate faulty memory or an addressing problem. 2E System bootup failed because of a bootstrap loader program checksum error.
Page 36 Installation Instructions: Roadrunner 030 and 040 AM-2000M Upgrade 16.0ADDITIONAL DOCUMENTATION For additional HARDWARE information, refer to the following: 1. AM-2000M Owner’s Manual 2.Alpha Micro Self Test User’s Guide 3.Alpha Micro Installation and Planning Guide For additional SOFTWARE information, refer to the following: 1. AMOS System Operator’s Guide 2.AMOS System Commands Reference Manual 3.
APPENDIX A SCSI TERMINATION A.1SCSI TERMINATION USING EXTERNAL TERMINATOR OPTION The preferred method of terminating the SCSI bus in an AMOS based computer is the installation of an external terminator. In early April of 1993, the external SCSI bus terminator became standard on all AMOS based computer configurations.
Page A-2 Appendix A BAIL LOCKS CONFIGURATION A SI SC (PRA-00222-00) EXTERNAL SCSI BUS TERMINATOR CONFIGURATION B SI SC MAC821 #4 SCREW AND WASHER External Terminator Installation The illustration shows two different types of external SCSI connectors. 1.Configuration"A" shows an extended external SCSI connector and bail locks for holding the terminator in place. This configuration is used on several different models of computers sold by Alpha Micro, including AM-990 and AM-1600 computers.
SCSI Termination Page A-3 2.For AM-2001 subsystem installations, the last SCSI device attached to the connector farthest down the cable away from the host computer must have its terminators installed. All SCSI devices inside the host computer must have their terminators removed.
Page A-4 Appendix A 2.When the SCSI host controller is supplying termination power, you want your internally mounted SCSI peripherals to be configured so they do not supply termination power. 3.If a computer with one or more SCSI peripherals is cabled to a subsystem with additional SCSI devices, the SCSI devices in the subsystem should be configured so they do not supply termination power. Ideally, you want the SCSI host controller in the main system to be the sole source of termination power.
SCSI Termination Page A-5 AM-62X SCSI 1/4" Streaming Tape Drive Installation Instructions, PDI-00625-00, revision A07 or later. AM-647 DAT Tape Drive Installation Instructions, PDI-00647-00, revision A05 or later. PDI-00172-40, Rev.
Page A-6 Appendix A PDI-00172-40, Rev.
APPENDIX B READ-AHEAD AND WRITE BUFFERING B.1INTRODUCTION In the past, AMOS systems achieved high levels of performance by using a "Herbie" style disk controller (such as the AM-520) to offload a large portion of the overhead associated with disk access. One additional benefit of this offloading, is that extra cycles are available on the Herbie controller to perform functions such as read-ahead and write buffering.
Page B-2 Appendix B B.2READ AHEAD The Roadrunner’s SCSI disk driver, SCZRR.DVR, is able to perform read-ahead directly into AMOS disk cache. When any program attempts to read a physical block from a disk, the SCZRR driver will also read up to an additional seven sequential blocks from the disk drive and store these read-ahead blocks in the cache. This read-ahead scheme works very well when jobs on the system are doing a large number of sequential reads.
Read-Ahead and Write Buffering Page B-3 SAVE MAX.DVR RETURN If you wish to disable or change the number of read-ahead blocks, simply use the FIXLOG program to generate a new disk driver and if the disk driver is for the DSK: device, don’t forget to use MONGEN and embed the new driver into the system monitor. The generic driver Roadrunner SCSI disk driver (SCZRR.DVR) is setup for seven read-ahead blocks. B.
Page B-4 Appendix B Therefore, you must weigh the potential for data loss (which is always there) versus the dramatic performance increase seen when using write buffering. If you are worried about the reliability of write buffering, it may be worth keeping in mind that the AM-520 disk controller has always used write buffering on a track-by-track basis (not quite as efficiently as the Roadrunner write buffering scheme however). The SMARTDRV program that comes with MS-DOS 5.
Read-Ahead and Write Buffering Page B-5 This would set up 100KB of write buffering for the DSK devices and 100KB of write buffering for the SUB device. All three drives would have their write buffers flushed every minute (or sooner if the drives are not busy with read requests). B.4FINAL NOTES Both read-ahead and write buffering schemes used on the Roadrunner hardware dramatically improve system performance in our lab tests.
Page B-6 Appendix B :T ; JOBS 5 ; JOBALC JOB1 ;JOB2 ; Increased QUEUE block allocation QUEUE 2000 ; LOAD LOAD.LIT LOAD DEL.LIT LOAD SYSMSG.USA LOAD TRMDEF.LIT ; TRMDEF TRM1,AM145=0:19200,ALPHA,350,350,350,EDITOR=15 ;TRMDEF TRM2,AM145=1:19200,ALPHA,250,250,250,EDITOR=15 ; DEL TRMDEF ; PARITY VER Simple dispatcher, for temporary use only ; ;SCZDSP SIMRR SCZDSP SCZRR ; High-Performance dispatcher, requires PIC LOAD DEVTBL.
Read-Ahead and Write Buffering Page B-7 AMOS32.INI File (cont.) ; LOAD SYSTEM.LIT SYSTEM SYSMSG.USA SYSTEM CMDLIN.SYS SYSTEM SCNWLD.SYS SYSTEM QFLOCK.SYS SYSTEM TRM.DVR[1,6] SYSTEM STR.DVR[1,6] SYSTEM MIN.DVR[1,6] SYSTEM FLP.DVR[1,6] SMEM.LIT 300K ;only for AMOS 2.2C (or later) Write buffering enable statement SYSTEM DVR:DSK/N 100K 60 Disk cache enable statement SYSTEM DCACHE.SYS/N/M/U 300K SYSTEM ; DEL SYSTEM ; LOG OPR: SYSTEM SERVICE SET SEEKOP DSKO: ;only for AMOS 2.
Page B-8 Appendix B PDI-00172-40, Rev.
APPENDIX C ROADRUNNER SOFTWARE CONFIGURATION C.
Page C-2 Appendix C C.1.2Warm Boot Ability A warm boot tape allows you to access the computer in situations where you are not able to boot from the hard disk drive. When doing a Roadrunner upgrade, you’ll be modifying the system initialization command file and using the MONGEN program to embed a new driver in your AMOS monitor. Either of these two operations, if done incorrectly, could result in a computer that won’t boot.
Roadrunner Software Configuration Page C-3 If your disk drive is running an operating system earlier than AMOS PR5/94 1.4C or 2.2C PR5/94, you will need to update your operating system. It is highly recommended that you update your operating system before you install the Roadrunner hardware.
Page C-4 Appendix C C.1.5Preparing the Software to Boot from the Roadrunner Hardware Before you turn off power to your computer and install the Roadrunner hardware, you need to make a couple of adjustments for Roadrunner compatibility: Instructions outlined in this section require that you directly modify your AMOS monitor, as well as your AMOS system initialization command file. These files are being modified directly to allow the computer to boot from the new Roadrunner hardware once it is installed.
Roadrunner Software Configuration Page C-5 For example: :T JOBS 1 JOBALC ; TRMDEF VER SCZDSP ; DEVTBL JOB1 TERM1,AM1000=0:19200,AM62A,100,100,100,EDITOR=15 SCZRR.SYS DSK1,DSK2 Once the dispatcher has been defined in your AMOS32.INI file, you must code the SCSI dispatcher to allow it to run on your specific system. Once you enter the product installation code (PIC), the product overlay file is forever modified and will not accept a new PIC. This can be a problem if you happen to enter an incorrect PIC.
Page C-6 Appendix C You will now be able to re-encode the dispatcher. If after once again rebooting the computer you still receive the same error, check with your dealer to make sure the correct PIC was supplied for your computer. 3.Your AM-2000M computer boots from a monitor called AMOS32.MON. In order for the Roadrunner to boot, a new monitor must be created using a driver called SCZRR.DVR, which is compatible with the Roadrunner hardware. The boot monitor used by the Roadrunner is also called AMOS32.
APPENDIX D ROADRUNNER AM-174 PROGRAMMING INFORMATION D.1ROADRUNNER AM-174 PROGRAMMING INFORMATION The MC68040 processor used on the AM-174 Roadrunner board contains more internal instruction cache (4096 bytes) than earlier MC68030-based processors. Increased internal cache is one of the features which contributes to the improved performance of the Roadrunner 040 board; however, if your software does not properly manage this instruction cache, it could be adversely affected.
Page D-2 Appendix D D.1.2What You Must Do.. The only sure way to address this issue is to flush the instruction cache after loading instructions into memory, but before executing those instructions. Because the method by which you flush the cache is different on the various 680x0 processors, you will need to add code specific to the 68040. You must be certain to handle the different processors individually. Failure to do so may result in inadvertently disabling certain processor features.
Roadrunner AM-174 Programming Information Page D-3 In versions of M68 appearing in earlier AMOS releases, the instructions MOVECD7,CACR and CINVA were not implemented. With the release of AMOS 2.2C, which includes M682.0(181), these instructions are now supported. Examples of their use are shown above. D.1.3One More Caution The 68040 also has internal registers called Transparent Translation Registers (also present on the 68030) that you must be sure not to modify.
Page D-4 Appendix D From the AMOS prompt, you can type: COMPAT COMPAT.DAT RETURN or you can add this same command into your system initialization command file. If you simply enter the command: COMPAT RETURN you will get a display showing the list of programs that have been selected for the special cache control.
