Apple II

Apple2 control characters?

Submitted by Harry Potter on December 31, 2022 - 4:07pm

Hi!  A while ago, I ported some cc65 code from CBM to Apple2.  While I was porting the code, I forgot to clean up the control characters, and the results were random attribute changes, i.e. inverse characters and a switch back to 40-column mode.  This leads me to believe that, like the CBM models, the Apple2 also had control characters.  Where online can I find a list of Apple2 control characters?

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Help identifying a game

Submitted by tony359 on December 28, 2022 - 12:04pm

Hi all

 

I need your help in identifying a game I used to play when I was a kid - I am assuming it was on the Apple //e, I hope I am not mistaking it with my friend's C64.

Memory is blurry but it was played on different levels, all shown on screen as "floors". You could use some lifts to go from one level to another. If not mistaken you could walk "out of the screen" and another whole set of floors would appear.

The lifts used to make some weird noise and, as a kid, I was a bit scared by that! Maybe it's incorrect but robots were involved?

 

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LZ77: trying to understand hash tables...other ideas?

Submitted by Harry Potter on December 26, 2022 - 2:44pm

Hi!  I'm trying to understand hash tables.  From what I understand, every time I process a string of data, look for the first four bytes in a hash table.  If a match is found, scan starting there for a better match.  If only the first two or three match, scan to there, as I do better on smaller offsets.  If the match is at least four bytes, add it to the hash table.  I thought of a derivative: keep an 8k array of bits, where each bit determines if an associated word was used.  If a word in the input was not already encountered, skip the LZ77 scan.

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Help needed debugging text adventures!

Submitted by Harry Potter on December 26, 2022 - 11:47am

Hi!  I'm working on a text adventure for the C64 and two text adventure codes for cc65 around which others can build text adventures.  The latter includes a version for the Apple3enh.  I fixed the bug with the former while optimizing, but the latter still have the bug.  :(   The bug is mainly displaying garbage for room descriptions and some other texts.  The programs are called AdvSkel65 and AdvSkelVic65 and can be found at c65 additions - Manage /game at SourceForge.net.  It seems to happen when the printtok() function i

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Need to Downsize the Collection

Submitted by jwg1962 on December 26, 2022 - 10:09am

So I went down to the basement to start working on some projects that I have been saving all year for our Christmas break and have finally realized as I am getting older and collecting more and more projects, that I now have enough projects to work on well past my 100th birthday.  (I am 60 now, so that's about 40 years worth. :-) LOL!)   It hit me that I now need to prioritize them and start letting some of them go, so that others may share in the joy of restoring vintage Apple equipment.   So far this break I have: 

 

-  Recapped 34 Macintosh LC power supplies.  

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Apple II

Apple2 upload site?

Submitted by Harry Potter on December 26, 2022 - 8:14am

Hi!  I want to upload MadLibApple to different web sites.  I have it on my cc65 sourceforge site, uploaded it to asimov.com and e-mailed about it to a third site.  It's still in asimov's incoming/ folder, and the third site didn't reply.  Are there any other sites to which I can upload it?

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Apple II

Some questions about the Merlin assembler

Submitted by jakint0sh on December 26, 2022 - 6:40am

Okay, just two quick questions:

1.  Merlin Pro comes in 2 versions, and can run under DOS 3.3 or ProDOS.  Are there any reasons why you'd want to use one or the other (besides the fact ProDOS supports subdirectories, etc.)?  What are the pros and cons?

2.  What's the difference between Merlin Pro and standard Merlin-8?

 

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Apple II

Apple Monitor Iic - For Apple Use Only + Yellow Dot?

Submitted by michaelx74 on December 24, 2022 - 10:32am

I've been using this monitor for years, but just became curious about it's label with 'For Apple Use Only', yellow sticker dot, 'apple service', ser. # and some other identifier  in pen ink - all underneith the lable's lamination.  I was able to find one other image of a yellow dot on the rear of one of these monitors.  At one point, I had a G4 Cube that was labled on the insidc 'Apple Test Machine' and am curious if this is something akin to that or...  just something normal.  Certainly doesn't seem so to this brain.  But let's hear from the experts of 'yall out there.  =]

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Unknown Apple II Card.

Submitted by michaelx74 on December 24, 2022 - 10:12am

Hi all.  Let me know if anyone out there has any info on this card.  I got it in a box with multiple II+s, III, IIc+ ages ago.  STB Systems Inc, 2283 with the number 1765 written down for S/N.  1982, Made in USA.  I just hadn't found anything online.

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Apple II

to buy IIe key switch

Submitted by heemin828 on December 23, 2022 - 10:45pm

I bought a vintage Apple IIe for $300 in August.

 But the Esc key was broken. It wasn't that the keycap was missing, but the switch was broken at all.

image : https://drive.google.com/file/d/12XSmfRqB6pUoqU8nuW771kPfvY3QgT-w/view?usp=sharing 

idk how to upload image

 

I was going to buy a key switch on eBay. But I heard somewhere that the height of the switch varies depending on the location of the switch. I don't know what to buy.

And yesterday I accidentally broke the left arrow key too :/

 

(sorry  about bad english)

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