Apple II

MedFLy Apple II+ Clone

Hi All, I recently purchased a large collection of Apple II equipment from a retired IT administrator who had worked in a local K–12 school district. Among the items was a MedFly, which—based on what I can tell—is an Australian clone of the German Basis 108, itself a clone of the Apple II+. So, essentially, a double clone!

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Apple IIe Disk Stuck on Write Protection

I'm trying to write some disks using adtpro and I keep getting a "This disk is write protected" error. I used the other drive and same issue, and I know that one works. I've gone in with a q tip and some isopropyl and cleaned the inside of the rail, but no luck 

I'm thinking it's a software issue 

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Floppy Emu Alternatives

I was looking for a floppy emu in general, but spending $150 on one doesn't sit well with. I do see some alternatives, like wDrive and Booti, but i want to know any others that are cheap. As long as they do the same thing the Floppy Emu does, it's fine 

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Apple II+ Diag ROM?

I have an Apple II+ (A2+) I'm working on. The same one with the broken keyboard, which I finally reassembled (yikes). Parts for the keyboard are on the way. But I booted the A2+ and I get no response from the keyboard, excellent screen Apple ][ and the prompt and blinking cursor. But if I hit keys, I don't see any additional characters on the screen.  I've tried 2 different keyboards so I don't think that's the keyboard is the issue. I'm about to hook it up to the scope and a logic analyser but would like to know if there is a diagnostic ROM that can help.

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iie or iic in emulated system for doing assembly programming

I've looked and it's been a challenge to figure out which of the ii's to emulate for doing assembly on the apple ii. I like the enhanced iie, it's got fp basic, int basic, monitor and mini-assembler available on power up. But, I'm ignorant, really, just cuz i'm able to get it working doesn't mean it's ideal. I see lots of iic stuff out there. The list of emulated systems is quite long ii, ii+, iic, iic+, iie, iie enhanced, prolly others i've missed. Should i consider emulating iic over iie enhanced? What are y'alls experience with one vs the other?

 

Thanks,

 

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best of books for iie

I looked around and haven't found a really good reference list for iie books that a newb might need. But, I've been doing my best finding and filing books that might work. I've  ordered the most important ones... so far as i can tell:

Manuals to have on hand

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Testing IRQs on IIgs

Hi folks, I'm fixing a few emulation bugs, and am hoping to find a volunteer to help verify behavior on real hardware.

Specifically, I'm looking for someone with a ROM 1 Apple IIgs, and the ability to run this disk image (i.e. with a BMOW floppy emulator, XDrive, or similar).

This disk contains:

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color? what the heck?

On a related note to the question about squares, I'm a little confused by the "color" word :). Specifically as applied to the iie. I like the visible computer program that shows how the 6502 works from the inside out (the apple/commodore program, not the modern thing). But, it "works" in color, which means it comes up like this:

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a square, really?

Hi,

 

I'm exploring different emulators (AppleWin on Linux and Mame are winners ATM), and I see a rectangle when the manual (Applesoft ][ Basic Programming Reference) says it's a square.

In FP Basic:

] GR

] COLOR=13

] PLOT 20,20

 

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California Computer Systems PROM card - 7114A

I wanted a ROM card to round out the  toolset and picked this up on ebay. Arrived today and I realized it was more than a clone of the apple integer rom card. More chips. Looking at it, I <think> you can install diodes on the pads on the lower left to selectively enable specific ROM chips. 

 

Anyone got documentaion on this? I looked on Apple2.org and they had a front photo but nothing else. 

 

Also, any idea why they differentiate between PROM and ROM in the silkscreen (above the pads - lower left)

 

Cheers

Pete

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