: Would you mind giving a quick tutorial on the : above please Bill, ie on the different IIc models : and the relevance of the model number? : Regards, John
The original //c model A2S4000 ROM $FF has only Disk ][ capability, and no ram expansion port. Those can be upgraded to 3.5" UniDisk capability and only accept the Ultra Z-ram expansion boards. These would be considered most likely to be the most abundant of the //c family. The ROM to upgrade these would be $00. The A2S4100 came with Unidisk 3.5 capability, and also Ram expansion ports included on the motherboards. These are ROM $03, and later had an upgrade ROM $04, which fixed a bug in DOS 3.3 usage. The last revision, which is actually an entirely different animal altogether is the A2S4500, or better known as the //c Plus, has a 3.5" drive built into the case, an 4 MHz acceleration circuit, and memory expansion. Bill Garber -- Apple2list is sponsored by <http://lowendmac.com/> and... / Buy books, CDs, videos, and more from Amazon.com \ / <http://www.amazon.com/exec/obidos/redirect-home/lowendmac> \ Support Low End Mac <http://lowendmac.com/lists/support.html> Apple2list info: <http://lowendmac.com/lists/apple2.html> --> AOL users, remove "mailto:"; Send list messages to: <mailto:apple2list@mail.maclaunch.com> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/apple2list%40mail.maclaunch.com/> iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com
