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

Booting disks

Submitted by tony359 on September 25, 2020 - 2:32pm

Hi all,

 

Can someone help me understanding how the Apple //e DOS/PRODOS works when it comes to booting something? 

I was tidying up my disk library today - I "certified" all my disks and I wanted to make a library from the DSK images on my Windows computer.

At some point I encountered "Lemonade stand" which would not work. I blamed a bad disk and spent some time until I realised the DSK file only contained the HELLO file and the LEMONADE.BAS file. 

 

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Apple II

Apple IIe ADTpro client issues

Submitted by gottj on September 24, 2020 - 11:51am

I was able to successfully bootstrap Speediboot, and made a ADTpro boot floppy for my Apple IIe. I used the disk image ADTPRO-2.0.3.DSK from the ADTpro/Disks folder for the boot floppy. I booted my Apple IIe ADTpro client, pressed R to receive a desired file, and it gives me a HOST TIMEOUT. I tried several times, and verified the the PC client shows a connection. It errors out each time.

 

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Apple II

Slot question on A2e - boot sequence

Submitted by dafivehole on September 23, 2020 - 7:39pm

I have a BOOTi card in slot 7 and a DuoDisk card in slot 6.  When both are installed, it always boots from the BOOTi card in slot 7.  Is there any way to leave both installed and choose which slot boots?

 

Thank you,

Roger

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Apple II

ADTpro straight through cable, DB9 to USB converter

Submitted by gottj on September 23, 2020 - 6:46pm

I have my Apple IIe connected to my Windows 10 (64-bit) PC via a straight through cable , and a DB9 to USB converter cable so that it connects to my PC via USB (purchased both from Retrofloppy). When I start the ADTpro.bat file, I get the screen to select the configuration. I choose Serial, and it only shows COM3, and two possible baud rates. When I select COM3 with teh default baud rate, the screen closes and an error log is created in the ADT directory. The error message is as follows:

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