Some help identifying my II

9 posts / 0 new
Last post
Offline
Last seen: 1 month 2 days ago
Joined: Feb 1 2013 - 00:06
Some help identifying my II

Hi everyone,

I found an apple II recently, and I am trying to uderstand what happened to it. I have the original bill, which says Apple II, 32 Ko.

Looks like it was built on 7902, late for a II, but still consistent with the build dates of IIs, from what I can read here. The Motherboard also has the memory blocks (I think).

From the pictures below, I figured that it has been upgraded to 48k (correct) ? I think this is requirement to add the Microsoft ram expansion board that brings it 64 k (and that card is there)

It autoloads, so since I think autoload was introduced in the II+, should I assume someone swapped a chip to make it autoload ? I think this was an option, perhaps that (c) 1979 chip I see.

There is a wire coming out of the keyboard, is this a user modification for lowercase? Looks like it can connect to a paddle type socket, waiting for your confirmation before I try.

Last, it has AppleSoft in memory, here also, since II were supposed to be chipped with Integer, does it mean that the original user upgraded the chips on the motherboard ?

thanks all !!

Offline
Last seen: 2 years 8 months ago
Joined: Jul 5 2009 - 23:18
Re: Some help identifying my II

Some info on Apple II/IIplus production dates and revisions:

http://www.techtalkz.com/apple/187741-apple-ii-iiplus-production-dates.html

PS I don't think it is too late for Apple II

Offline
Last seen: 2 years 8 months ago
Joined: Apr 10 2006 - 20:01
Re: Some help identifying my II

zonga wrote:
Looks like it was built on 7902, late for a II, but still consistent with the build dates of IIs, from what I can read here. The Motherboard also has the memory blocks (I think).

It has the hard-wired memory blocks. Earlier examples had sockets.

zonga wrote:
From the pictures below, I figured that it has been upgraded to 48k (correct) ? I think this is requirement to add the Microsoft ram expansion board that brings it 64 k (and that card is there)

Right.

zonga wrote:
It autoloads, so since I think autoload was introduced in the II+, should I assume someone swapped a chip to make it autoload ?

Right.

zonga wrote:
There is a wire coming out of the keyboard, is this a user modification for lowercase? Looks like it can connect to a paddle type socket, waiting for your confirmation before I try.

This is the Shift Key Mod. See:
http://support.apple.com/kb/TA30700

zonga wrote:
Last, it has AppleSoft in memory, here also, since II were supposed to be chipped with Integer, does it mean that the original user upgraded the chips on the motherboard ?

Yes. Or someone did. As far as Apple Computer, Inc. was concerned, the only differences between the II and II+ as they sold them was the ROM and badge. Everything else (power key raised-ness, keyboard model, jumper selects, etc.) was up to what was in the parts bin at the time. You could still order a II vs. a II+ as far as Spring, 1981 according to price lists.

Offline
Last seen: 3 weeks 5 days ago
Joined: Jan 27 2011 - 12:51
Re: Some help identifying my II

david__schmidt wrote:
zonga wrote:
Looks like it was built on 7902, late for a II, but still consistent with the build dates of IIs, from what I can read here. The Motherboard also has the memory blocks (I think).

It has the hard-wired memory blocks. Earlier examples had sockets.

I think this motherboard is a rev.3 with the memory select blocks still removable (exchangeable between 4K and 16K) in sockets. The height of the blocks appear similar to other nearby socketed ICs, as opposed to the hardwired blocks on later rev.4 boards that sit lower. Also, I believe the 7902 date of the board puts it squarely in the rev.3 period, whereas rev.4 boards started around 7920.

Not that it makes any meaningful difference, as rev.3 and 4 boards are functionally identical in practice as long as you have 16K memory blocks installed.

Howie

Offline
Last seen: 2 days 16 hours ago
Joined: Dec 20 2003 - 10:38
Re: Some help identifying my II

Apple II serial numbers started with A2S1 while II Plus serial numbers started with A2S2 which means yours came out as a II with integer basic in ROM

They swapped in all the ROMs. That was pretty common as most software available required it.

The Rev 4s I own have Rev to the left of slot 4 with the 4 inside the hole at the bottom of the slot. Yours doesn't have that. If you remove the 6502, you'll likely see a rev number underneath. My guess is that it'll say Rev 3

MarkO's picture
Offline
Last seen: 3 weeks 4 days ago
Joined: Dec 10 2011 - 16:26
Re: Some help identifying my II

I have an Apple ][ and an Apple ][+. [1], [2]

My Apple ][+ has a Rev-01 Board, while the Apple ][ has a Rev-03 Board...

Offline
Last seen: 1 month 2 days ago
Joined: Feb 1 2013 - 00:06
Re: Some help identifying my II

Thanks guys, very helpfull.

Can I still find integer roms and non auto load chip to put this back to a more vanilla II ?

Or are these insanely expensive now ?

thanks

Offline
Last seen: 1 month 2 days ago
Joined: Feb 1 2013 - 00:06
Re: Some help identifying my II

I answered my earlier question by doing a search on Ebay,

man these things are pricey

MarkO's picture
Offline
Last seen: 3 weeks 4 days ago
Joined: Dec 10 2011 - 16:26
Re: Some help identifying my II

zonga wrote:
I answered my earlier question by doing a search on Ebay,

man these things are pricey

Finding an Apple ][, non working that might have good ROM's is Hit and Miss kind of thing..

If you just want it to work, get newer EEPROMS with the Integer BASIC Code. http://www.willegal.net/appleii/appleii-integer.htm

Log in or register to post comments