Apple II

Capturing Disk ][ data signals using logic analyzer

Submitted by ven on June 24, 2023 - 1:21am

Hi,

I've got a logic analyzer hooked up to disk ][ card to capture the read signals when the machine boots Dos 3.3.  I want to turn the read signals into actual 1's and 0's so I can feed them to my program that decodes the disk data; the latter part I have already finished. 

I was wondering if anyone can offer advice on coverting the timing signals into actual 1's and 0's.  One question I have is, there seems to long gaps between signals, do I treat those as zeros or after a maximum of two zeros, ignore until the next read pluse?

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Apple II+ 80 column card

Submitted by DrkStarr on June 24, 2023 - 1:11am

Hello again,

Since I got some great advice about getting a 16K Language Card, I thought I would ask about an 80 column card for the Apple II+.

It looks like there are very few out there, but I'm seeing ones for the Apple IIe. Is anybody making these and selling them? You can buy so many other parts new, I'm wondering if there are any 80 column cards out there. Because E-Bay is looking pretty slim.

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Apple II

Apple2/cc65 printer support?

Submitted by Harry Potter on June 23, 2023 - 11:16am

Hi!  I created a program called MadLibApple.  It currently has only eight stories.  I need to add more but am currently not up to it.  :(  Now, I want to add both save and printer support.  For save support, I can use ProDOSi.  What about printer support?

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Apple II

My Apple II Rev.0 4116 memory replacement failure

Submitted by LaserMaster on June 20, 2023 - 10:54pm

I'm trying to determine what cause brand new 4116 chips from Jameco to fail immediately on the intial power up.  I had found that after my Rev.0 sat for 8 years, when I powered it up the PSU had died.  I had a spare Apple IIe Astec PSU so I installed it.  I reseated the CPU and many of the other chips, but not all.  I had all good voltages and all good clock signals.

 

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Apple II

Apple II 5.25 cleaning disk

Submitted by magnusfalkirk on June 18, 2023 - 10:33am

Reposting for a friend.

 

Hi. Just wondering if anyone has a spare 5.25 cleaning disk they could spare?  I would like to see if cleaning the heads can get my 2c drives to read disks again.

Thanks in advance!

 

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Apple II

Strange serial echo issue with Apple //e and RS232 Serial Wifi Modem

Submitted by CWJ_Wilko on June 17, 2023 - 2:23am

Hi brains trust, I recently ordered this 'The Old Net' RS232 Wifi Modem from Tindie: https://www.tindie.com/products/theoldnet/rs232-serial-wifi-modem-for-vintage-computers-v4

 

Overall I'm really happy with it, and it seems to work perfectly with my vintage Macs. However I'm having the strangest issue with my Apple //e and the Super Serial Card.

 

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Apple II

12V Power supply conversion using a Mean Well RPT 60B

Submitted by CheshireNoir on June 17, 2023 - 1:37am

A friend approached me to rebuild his Apple II power supplies. One was a clone and one was an original. The original was already in pieces when I got to it, with components desoldered. The clone was very similar to the original Apple PSU, but cheaper and flimsier. Also one of the previous owners had "hacked" on it, adding an external fan and an additional power switch.

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Apple II

Who has the knowledge of IIGS motherboard to help me troubleshooting a problem for a fellow owner?

Submitted by jeff d on June 16, 2023 - 1:48pm

A IIGS owner had asked for help on FB and I offered to help thinking it may be something simple they just weren't able to do themselves. Turns out my thinking was flawed!! This board has a problem and I'm running out of ideas and could use some help. The system came with a REMicro ROM01 chip and this is a ROM01 board.

 

 

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Apple II

Practical Peripherals Microbuffer II ROM Dumps?

Submitted by VeryVon on June 15, 2023 - 7:36pm

I have a Microbuffer II card here non-working (when plugged into an Apple][+, no beep and the screen is garbled lores blocks)  One of the things I'd like to do is verify the ROM's are good.  Does anyone have a known working card I could compare to?  thanks.

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Apple II

Apple II 16k Language Card

Submitted by DrkStarr on June 15, 2023 - 3:43pm

I'm looking for an Apple II 16k Language Card. Simple right. ;) But a lot of them are old and beat on E-Bay.

 

There is this new design, different from the Microsoft version. I like it because I don't have to pull any chips to use it. It's on ebay: Apple II 16k Language Card

 

Has anybody tried this card out? Or have you heard about it? It's about the same price as a tested and working card. But I'd rather have something new, that I can just pop in, if it works.

 

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