ON THREE 512K Memory Board User's Guide Copyright --------------------------------------------------- ON THREE and the ON THREE logo are registered trademarks of ON THREE. The ON THREE 512K Memory Board, the CllA, C12 and C13 PROM's, and this manual and the software (computer programs) described in it are copyrighted by ON THREE or its software suppliers, with all rights reserved. Under the co_pyright laws, the ON THREE 512X Memory Board, the Cl lA, C12 and Cl3 PROM's, this manual and the programs may not be copied, in whole or part, except in the normal use of the 512K Memory Board, manual and software. Willful violations of the Copyright Law of the United States can result in civil damag;es of up to $50,000 in addition to actual damages, plus criminal penalties of up to one year imprisonment and/or a $10,000 fine. Product Reuisions ON THREE cannot guarantee that you will receive notice of a revision to the software described in this manual. You should periodically check with 0 N THREE or your authorized ON THREE dealer. © ON THREE 1984, 1985 4478 Market Street, Suite 701-702 Ventura, California 93003 (805) 644-3514 Ill E-Z Pieces Update and RAMDISK Driver written by Rob Turner Update Programs and User's Guide written by Bob Consorti Notice =======------------------------------------------------------ ON THREE reserves the right to make improvements in the product described in this guide at any time and without notice. Customer Satisfaction ========~:;~==----------------------------------------- ON THREE warrants that all components contained in this package will be free from defects in materials and workmanship for six months from the date of delivery. In addition, if ON THREE releases a corrective update to the software described in this manual during the six month period after you purchased the package, ON THREE will replace the applicable diskettes and documentatiOn with the revised version at no charge. In the event of malfunction durir1g the six month limited warranty of the materials contained herein, ON THREE will repair or replace said product to whatever extent it deems necessary to restore said product to operating condition. During the first six months following the date of delivery, all labor, material and return shipping will be provided without charge. There shall be no warranties for either parts or labor after the six month limited warranty expires. Any modification, repair, or other such tampering by the customer voids this warranty. Even though ON THREE has tested the software and hardware described in this manual and reviewed its contents, neither ON THREE nor its software or hardware suppliers make any warranty or ·representation, either express or implied, with respect to this manual or to the software and hardware described in this manual, their quality, performance, merchantability, or fitness for any particular purpose. As a result, this software, hardware and manual are sold "as is", and you the purchaser are assuming the entire risk as to their quality and performance. In no event will ON THREE or its software or hardware suppliers be liable for direct, indirect, incidental, or consequential dama~es resulting from any defect in the software, hardware or manual, even 1f they have been advised of the possibility of such damages. In particular, they shall have no liability for any programs or data stored in or used with ON THREE products, including the costs of recovering or reproducing these programs or data. Some states do not allow the exclusion or limitation of implied warranties or liability for incidental or consequential damages, so the above limitation or exclusion may not apply to you. Any implied warranty is limited to the duration of the expressed warranty. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you. Table Of Contents Guide For Installation Overview ......................................................................................................................... 1 Installation Instructions ........................................................................................... 1 Opening Your Apple///. .......................................................................................... 3 Removing The Old 256K Memory Board ........................................................... .4 Removing The Old Memory Chips ......................................................................... 4 Removing The 6522 At 'B4' ..................................................................................... 5 Installing The New PROM At 'C12' ....................................................................... 5 Installing The New 512K Memory Board. ......................................................... 6 Installing The Jumper Assembly At 'B4' ........................................................... 7 Re-installing The 6522 At 'B4' ............................................................................... 8 Installing The Ribbon Cable Assembly At 'C11' ............................................. 8 Installing The New PROM Cable Assembly At 'C13' ..................................... 8 Making Sure Everything Is Connected Correctly ........................................... 8 Replacement Of The Bottom Plate. ....................................................................... 9 Testing Of The 512K Memory Board. .................................................................. 10 Packaging Your Old 256K Memory Board. ........................................................ 1 1 Guide For Use . Overview ......................................................................................................................... 12 Using The Update Programs .................................................................................... 12 Special Notes On SOS 1.3(S) ..................................................................................... 13 Using System Utilities 1.2. ....................................................................................... 13 Using Business Basic v 1.23Ax. ............................................................................... 1 4 Special Notes On The VisiCalc Programs ............................................................ 1 5 Special Notes On Ill E-Z Pieces ............................................................................. 15 Notes On Using Your 512K Apple ///With Catalyst.. .................................. 16 Notes On The Updated Version Of Apple Writer ///. .................................. 16 Using The RAI\IDISK. ................................................................................................... l 8 Customizing The RAMDISK Driver (What To Do If It Doesn't Work) ..... 19 To Flash Or Not To Flash ........................................................................................... 20 Technical Info. On The RANIDISK .......................................................................... 20 512K Memory Board Technical Notes ................................................................. 21 Guide For Installation Overview The ON THREE 512K Memory Board gives your Apple/// a full512K of memory, the most the machine can cfuectly use. Most programs written for the Apple/// will automatically use the extra memory. But for those that won't, utility programs are provided to update all of your Apple/// disks so almost all of your programs will use the full 512K of memory. The Apple 1/fs hardware was designed to use only 256K of memory. So, until the ON THREE 512K memory board was developed, going past 256K was impossible. The //fs operating system (SOS) can support 512K of memory, but with the manufacturer-imposed hardware limitation, it was unable to. Until now. Through a clever design, the ON THREE 512K memory board brings your programs the capability of using 512K of memory. In addition, utility disks are provided to not only check your 512K memory board after installation but also use a portion of your 512K of memory as a very fast disk drive. The RAMDISK is optional, so if you want to have a lightning fast disk drive, you can! Installation Instructions Your ON THREE 512K Memory Board upgrade contains the following items: 1) Apple/// 512K Memory Board. 2) C12PROM 3) EX-1 Integrated Circuit Extractor. 4) Diskette : 512K Memory Test (Side~). : Upgrade Data (Side 2). 5) Diskette : UPGRADE.T0.512K (Side 1). : System Utilities 1.2 (Side 2). 6) Diskette : RAMDISK.DEM0.1 (Side 1 ). : RAMDISK.DEM0.2 (Side 2). Installing the 512K memory board is straightfmward and should take no longer than one hour. After reading this, you should have no reservations about the installation. However, if you do, please bring your machine to your dealer. However, you will no doubt be charged for the installation. ON THREE 512K Memory Board User's Guide - 1 - To accept the 512K memory board, your Apple Ill must be a 256K machine or a 128K machine with the newer 5 volt memory board. If not, contact ON THREE or your dealer to arrange an upgrade to 256K. In addition to the parts provided with the upgrade kit, you will need the following items to install the 512K memory upgrade: 1) Number 2 Phillips-head screwdriver. 2) Standard 1/4 inch screwdriver. 3) Six blank diskettes. Before starting the installation process, make copies of the three diskettes supplied with the 512K memory upgrade using the System Utilities Program supplied with your Apple 1/1. Each disk supplied with the upgrade is double-sided, and since you cannot normally copy onto both sides of a diskette, you must back up each side of the supplied disks on its own disk. First. make a copy of the front side of the 512K Memory Test disk. Label it 512K Memory Test. Next, copy the back side of the 512K Memory Test disk onto the front side of another of your diskettes and label it Upgrade Data. Follow the same procedure for copying all of the other disks supplied with the upgrade. When instructed to use a diskette, always use your back up. If one fails, you will always have a master diskette intact to use for making more copies. To begin, save any file you are currently working on and then tum the power to your Apple Ill off. Detach all power cords and video, disk drive and other interface cables. Tum to page 106 of the Apple Ill Owner's Guide and follow the instructions for removing the cover and peripheral cards. Even if you don't have any peripheral cards in your Apple Ill, remove the cover and any dummy cards following the guide's instructions. If you have a clock in your Apple Ill, disconnect the battery cabling before proceeding. If you have an ON THREE O'Clock, simply disconnect the cable by snapping off the end of the battery pack. If you have another clock, disconnect the cabling in a similar manner. ON THREE 512K Memory Board User's Guide -2 - Opening Your Apple Ill To install the 512K memory upgrade, first remove the bottom plate of your Apple 11/. Carefully turn your computer over so that you can see the bottom. The plate which we will remove holds your machine's model and serial number. There is also a smaller metal plate on the bottom of your Ill which covers the power supply; do not remove that. Now locate and remove all the Phillips-head screws fastening the large plate to the shell. Use the Phillips-head screwdriver. Be sure you keep all the screws in one place because you will need them to reattach the bottom plate later.Facing the computer so the keyboard is upside down and closest to you, gently lift the left edge of the plate about an inch or so. As you lift the bottom plate, you will see two blue ribbon cables. They connect the keyboard and the disk drive to the main circuit board of the Apple II/. These must be removed. To do that, carefully unloosen and disconnect them by slowly rocking them back and forth in their sockets. After the cables are removed, continue lifting the left side of the bottom plate. As you do, you will see a small twisted black cable attached to the main circuit board. This is the cable to the internal speaker. Unplug it. And don't worry about pairing the same male and female connectors when you reattach it. The connection is not polarized and it will work either way you insert it. If you have an Apple clock, there will be a battery cable attachment about halfway across the main circuit board. Disconnect it by pulling on it gently. If you have an Apple Ill or an Apple Ill plus with the interlace kit installed, located very close to the battery cable attachment is another cable attachment that looks very much like the one on the battery cable. Disconnect it in a similar manner. You have now disconnected all of the cables except one. Pull the left edge up so that it is perpendicular to the computer casing and you will see a cable attached to the right side of the main circuit board. This is the power supply cable. Carefully reach in and unplug it. Don't worry about electrical shock because everything is insulated and you unplugged the machine before beginning, as instructed earlier. Now that you have unplugged this last cable, turn over the main circuit board so the computer chips are right-side up. All of the cables attaching the main circuit board to the computer chassis should now be disconnected. Lay this assembly down next to the computer and continue. ON THREE 512K Memory Board User's Guide -3 - Removing The Old 256K Memory Board You should now be looking at the innards of the Apple Ill computer. Notice that sitting on top of the main circuit board is another circuit board; this is the Apple/// 256K Memory Board. It it attached to the main circuit board by two, 25-pin connectors, one at each end .. You must remove the old 256K memory board before inserting the new 512K board. To do so, follow these next instructions very carefully. You will disconnect one side at a time without lifting the side more than a short distance fTom the 25-pin connector. If you lift one side too far away while the other is still attached, you will bend the 25-pin connector and make it very difficult to install the new 512K memory board. Remove the left side first. Place your left hand on the part of the 256K memory board closest to you and your right hand on the part of the board that is farthest from you. Gently rock the board upward. Depending on how old your machine is, the board may be somewhat sticky. It may take some tugs to get the one side off of the 25-pin connectors. Once you have the left side removed, put your left hand on the edge farthest away from you and your right hand on the edge closest to you. Again, gently rock this edge upwards until it comes off of the 25-pin edge connector. As soon as it is off, place the 256K memory board down on a dry. flat surface. You should now see the main computer board. It requires a few modifications before it can work with the new 512K memory board you will attach later. Removing The Old Memory Chips To enable the computer to use the new memory board you soon will install, you must change the chips on the main computer board which handle memory addressing. These chips, called PROM's, control the way the memory found on the new board is used by the Apple///. Since the design of the 512K memory board is very different from that of the 256K memory board, four memory-addressing PROM's on the main computer board must be changed. If you look closely at the main computer board, you will see that it is labeled with index numbers and letters. Starting at the left front corner you will see small white lettering that says Al. These numbers tell you each chip's location, so you should familiarize yourself with them. ON THREE 512K Memory Board User's Guide -4- Locate the EX-1 Integrated Circuit Extractor. It is the horseshoe-shaped, black metal device provided with the 512K memory board. Find the computer chip located at Cll. On the chip are small numbers and letters. One set of numbers reads 342-0061 or 341-0061. Place the curved ends of the extractor tool around the chip which sits in a socket on the main computer board. Be careful to place the tool around the computer chip only and not the socket. Gently pull up the chip. Use a similar procedure to remove the PROM's at locations C12 and C13. The computer chip at C12 will be labeled with the numbers 342-0056 or 341-0056. The computer chip located at C13 will be labeled with the numbers 342-0063 or 341-0063. Remove all three of these chips and set them aside. Removing The 6522 At 'B4' Since the Apple Ill hardware was designed to use only 256K of memory, a few additional addressing lines must be changed on the main computer board. With new addressing lines, the computer can use the full512K of memory. One of these addressing lines is located on the 6522 computer chip located at B4 on the main computer board. This is the third large chip from the left in the row of computer chips closest to you. To remove this chip, first locate the standard 1/4 inch screwdriver. Place the flat head of the screwdriver between the computer chip and the chip's socket. Point the screwdriver's flat head away from you and toward the chip you will remove. Be careful not to put pressure on any of the small, blue-tipped capacitors located near this chip. Gently slide the screwdriver under the 6522 chip at B4 and slowly lift the 6522 from its socket. Be careful not to bend any of the metal pins coming from the 6522 chip as you remove it. After you have lifted most of the chip out of the socket, use the Extractor Tool to lift the 6522 chip completely out of the socket and place the chip on a flat surface. Installing The New PROM At 'C12' One of the new memory addressing chips is located at C12 on the main computer board. This next procedure will guide you in installing this chip. To start, place one piece of the white protective shipping foam on the table near the computer. Pick up the 512K memory board. It is wrapped in plastic anti-static wrap. Be very gentle with this package. ON THREE 512K Memory Boa..-d User's Guide -5 -