I DON'T SHIP TO THE USA. Do not place an order because I will need to cancel.
This board replaces the 6 original ROMs (D0,D8,E0,E8,F0,F8)on the motherboard.
The board is compatible with Apple II, Apple II+, Apple IIEuroplus. (Note is is not compatible with J-Plus, send message to me for J-Plus version).
You get two replacement ROM images, one with exactly the same content as your originalROM’s containing AppleSoft Basic, and another ROM with the original Apple IIWoz Integer Basic plus also a few diagnostic tools.
The 32Kx8 EPROM on this board contains 2 ROMimages or banks, selectable with a jumper.
The first bank (Jumper ON) contains the exactsame contents as the original ROM’s, thefive Applesoft BASIC ROMs D000, D800, E000, E800, F000 and the auto start bootROM F800.
The second bank (Jumper OFF) contains theoriginal Apple II Woz Integer BASIC and also includes Inspector and Watson,Disk and Memory debug tools/utilities, see photo screenshots(it also contains a duplicate copy of the auto start boot ROM F800)
The manuals for Inspector and Watson are available in PDF formif you do a google search.
See the memory map of the Eprom in one of the attachedphotographs.
To run Inspector and Watson, make sure to be in IntegerBasic (jumper removed on card) and then to start Watson, do a CALL -12288 or type D000G in the monitor. Watson is in the D0 rom and the Inspector isin D8.
Note on INTEGER BASIC: When booting the INTEGER BASIC bank(jumper removed) you first boot into the monitor program. To actually start theBASIC, you need to press CTRL + B and then RETURN.
There is a listing on selling this software for$400. class="MsoNormal">There are also a few photos that show the process and tools used to make the actual ROM contents, should you want to make your own ROM's.
There are two physical versions of this ROM replacementboard available on .
The Classic version and the Mini version. (See photos attached)
They are bothfunctionally identical.
The Classic version uses all 1970’s technology, through holemounted TTL IC’s in Sockets, just like the rest of your motherboard is built.
The Mini version uses modern non-through hole SMT technologyto mount the IC’s directly on the board without the use of sockets. Because of this more modern technology, theboard size is smaller.
Everything else is identical between these two versions.
This is the smallest board of this replacement ROM you willfind on the internet.
Installation of the ROM card:
First remove all the six ROM’s from the mother board andalso the IC at location F12.
The board plugs into the D0 socket and also into the socketat location F12 (you have to remove the IC there (74LS138).
There are many detailed documentations on the web availableto assist you. See some links on one ofthe photos.
Take your time to make sure all the pins are aligned beforeputting pressure on the board to seat it.Use a flashlight, small mirror or a good pair of magnification glassesto look at the socket.
WARNING: The board will obstruct installation of expansioncards longer than Apple Disk II controller into slot 6 (see photos)
(Note, on most of the ROM cards available on the internet it blocks both slots 6 and 7 and slot 7 is a key slot for Video cards, see photos)
One more thing:(where did I hear that before?)
This board has small gold plated pins of only 0.5mm diameterto plug into your Apple II mother board.
These are the thinnest pins available and will not damageyour precious mother board sockets. (see photo)
Some other ROM boards have round 0.6mm pins or square pinsof 0.65mm (normal header pins, like the one on this board for the Jumper).
The EPROM socket is also gold plated, round machined pinsthat are of high quality compared to standard IC sockets. Should you want to remove this EPROM tomodify its contents then you have nothing to worry about. You won't find this product with the same price and quality elsewhere.
The board can contain a 27C256 EPROM or a 27E257 EEPROM, both are 32Kx8 ROM memories. If you have a preference either way, send me a message before you buy.
Please be aware that the software contained onthe Apple II ROMs is still under license by Apple! If you own an original AppleII then you are implicitly licensed to use the software in the ROM of thatmachine.
Under no circumstance should you use any Apple II ROM image if you are notlegally entitled to do so.
