Apple II

Liron card and unidisk 3.5 drives wont boot.. But it is it supposed to?

Submitted by Verault on October 2, 2020 - 4:58pm

So I just got my first Liron / Apple 3.5" floppy controller card. As soon as i put the card in the system (slot 6 or 7) I was expecting it to behave like a 5.25" floppy drive and attempt a boot from the 3.5" drive. But the Card doesnt even register in the computer the way the 5.25" floppy contoller does. The 5.25" controller at boot will show the Apple ][ at the top of the screen and attempt a boot or stay there. With the Liron card installed the computer always boots to a Basic Prompt. I can type in PR#6 and it will then attempt to boot the disk in the 3.5" drive.

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Apple II

Apple /// and /// Plus rgb and composite video questions

Submitted by Verault on October 2, 2020 - 4:53pm

I'm trying to find specific information about the Apple /// and /// plus video outs.  Alot of sites claim the composite output of the Apple /// is monochrome. I only own an Apple /// Plus and my composite video out seems to be in color.

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Apple II

Apple II revisions

Submitted by mmphosis on October 2, 2020 - 4:33pm

Does anyone has a revision list  for the Apple II?  A list with descriptions of the revisions would be great.  How many revisions were there?  How do I tell what rev my Apple II is?

 

I read a posting about 8-bit fonts, and was confused as to what these revisions were.  The bit about rev 7 and lower-case letters I have not heard of before - it doesn't sound correct to me:

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Apple II

Apple /// Datanetics keyboard

Submitted by Daniel Beardsmore on October 1, 2020 - 7:10pm

I learned with fascination some time ago that the Apple /// had both Datanetics DC-50 and Alps keyboards. Both took the peculiar route of having double-action arrow keys.I’m in contact with Meryl Miller from Datanetics, but he left the organisation before the Apple /// was created, and none of the Datanetics literature he preserved mentions double-action as existing. Curiously, the Datanetics double-action type has no “dash number” (DC-51-xx) which makes me wonder if it was created specifically for Apple and never advertised.

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Apple II

Strange Apple II keyboard types

Submitted by Daniel Beardsmore on October 1, 2020 - 7:02pm

Edward Harro Walsh documented on his website (currently suspended) some very bizarre keyboard switches reportedly found in Apple II computers. The only switch type depicted with photographs was the Alps type¹ — all the rest were shown with diagrams. The keyswitch types used in Apple II computers are fairly well understood: Datanetics DC-50, Alps KBB¹, ITT snap-action array (possibly Datanetics DC-70), SMK J-M0404 series, Mitsumi KAM, Apple hairpin spring and Alps KCM.

¹ normally KCC at this point in time, but inexplicably referred to as “KBB” by Apple in their bill of materials

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Apple II

Replacing an MMU (344-0010-B)

Submitted by gareth_IIe on October 1, 2020 - 10:47am

I need to replace the MMU (part number 344-0010-B) on an Apple ][e.  Does anyone know of anywhere I can buy one?  Alternatively, does anyone know if it is possible to burn some kind of blank logic IC in order to reproduce an MMU?

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Apple II

Disk Drive Apple //c

Submitted by pcbastler on September 30, 2020 - 1:37am

Hi,

 

I have a problem with my //c: It mostly shows the message "Check Diskdrive" when trying to boot.

After swapping the ROM FF with a ROM04 Eprom this behaviour changed and the //c work some better. But after inserting a "special" disk from my collection, the //c got back to the above behaviour. Even if the disks where written the same day on this //c. The disks are working properly on my ][ europlus.

 

I have already tried to clean the drive, but with no change. Seldom it reads the disks, so I am guessing it is not a completly hopeless case.

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Apple II

Will choplifter run without a joystick attached?

Submitted by mgc_bb on September 29, 2020 - 4:48pm

Hi guys,

 

Stupid question but should choplifter run without a joystick attached, I can load it but it does not start properly after the title screen and does not show the demo with the chopper just stuck on the pad, the game is running as you can pause the game using the esc key.

Not played choplifter on Apple II since the 80's but don't remember if on keyboard or joystick.

The game should run on any Apple II with 48k or more according to the game manual pdf

Remember playing this in the maths room at school on a green screen monitor ;) happy days!

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Apple II

Strange video output on apple iie on some games

Submitted by Magnificat on September 27, 2020 - 8:33am

Hi Everyone, i have a early board apple iie that for the most part runs great and i didn't even know i had a problem until i started running more and more games on it and then i started seeing that some games had graphics issues and some did not.  I thought this might have been related to the extended memory card, and so picked up a second card used to test and both cards show the same issue. 

 

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Apple II

Apple IIe keyboard to II+ encoder card

Submitted by dorkbert on September 25, 2020 - 5:12pm

It seems that someone back in 2008 were selling them for about 30 bucks. Does anyone here have one?

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Apple II

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