Apple II

Ralle Palaveev VGA card boards arrived today

Submitted by softwarejanitor on November 10, 2023 - 6:00pm

This is similar to the Vince Briel version of the card, but supposedly with some additional capabilities.

https://github.com/rallepalaveev/analog

 

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Apple II

Zmachine for Apple IIe

Submitted by swartzcr on November 10, 2023 - 12:16am

Hi! I'm trying to develop a zmachine game for the apple IIe and I'm running into some trouble with errors, and am feeling a bit out of my depth, I'm curious if anyone here might be able to help me

When I build my game for z3, it works, and when I build it for z5 I get INTERNAL ERROR 00

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Apple II

Stunt Car Racer ported to Apple II

Submitted by cobbpg on November 6, 2023 - 3:06pm

Hi folks,

I created a port of the C64 version of Stunt Car Racer to the Apple II. Here's a video demonstration with a download link in the description: https://www.youtube.com/watch?v=N2uZCSfIqR4

All it needs is 48K RAM to run. Since I have no access to real hardware, I could only test the game with AppleWin, and I'd love to know if it actually works as intended on the real deal.

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Apple II

Apple II+ hard reset

Submitted by tony359 on November 4, 2023 - 4:00pm

Hi all,

I'm trying to find out if there is a way to perform a hard reset on an Apple II+ without having to power cycle the machine.

The background is: the machine is on display in a local no-profit computing museum and it would be great if there was an easier way to start another program than reaching at the back for the power switch.

Is there a way to wire something onto the motherboard so when triggered it performs a full reset as if the computer was power cycled? Thank you!

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Apple II

Apple Schematics

Submitted by Stargeezer on November 3, 2023 - 11:25pm

Kind of a wonky question here.

A while back, I found some very nice pdfs of Apple 1 schematics.  I had them printed on cardstock and I have them as art on the wall.

I thought about doing this for the II+ and IIe.  Finding schematics on Asimov or RetroActive is not the problem, what is a problem are the number of pages that make up the schematic.

Has anyone ever stitched together some of the pages to make a more contiguous schematic?

Doers anyone know how to stitch pdf pages together?

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Apple II

Red light on duodisk drive and constantly running

Submitted by JorgeL on October 31, 2023 - 1:19pm

I recently changed the rifa cap on my old Apple IIe and after putting everything back together my duodisk drive is constantly spinning and has a red light on at all times.  

I am pretty new to this, so I am not sure what the issue could be. Before changing the rifa everything worked fine. 

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Apple II

Question about Apple //e 80COl + 64kb card

Submitted by Macintosh_nik on October 31, 2023 - 7:24am

Hi guys! What are these items on the 80COL cards for? I tried on the big card to remove the jumper and nothing seems to change.....

 

Thanks in advance!

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Apple II

Apple II (Not Plus) Board has Issues

Submitted by DistantStar001 on October 29, 2023 - 4:22pm

Recently got a Rev.2 Apple II board.  Originally had AppleSoft ROMs, But the AutoStart had a bad pin (broke off) so I replaced them with an Integer set I had on a II+ board.  The board boots to the Machine Monitor, and with a ROM switch card (AppleSoft onboard) in Slot 0, it will go to BASIC.  I connected a Disk II in Slot 6, and put in a copy of Apple-cillin II.  It loaded fine, so I tried a copy of DOS 3.3, and it either hangs after splash screen or crashes.

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Apple II

MMU problem?

Submitted by afrb2 on October 28, 2023 - 1:36pm

Hi all,

 

I found a IIe in the loft (PAL version) and it does not boot.  Clock phases are correct and address/data lines look OK.  Adr downstream of buffers 74LS244 also look OK and buffers test OK (in an LED & switch tester!). There is no beep.

 

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Apple II

Apple /// ROM Adapter and Custom ROM Project

Submitted by MacFly on October 28, 2023 - 11:36am

I wanted a reliable and easy to use adapter for the Apple /// system ROM ("B9 ROM"). Something to plug standard EPROMs & EEPROMs. I want to make a few ROM extensions - making use of the second ROM bank, which was orignally unused. Apple only installed 4KB ROMs, though 8KB were supported (split into two banks) - but the unused second bank just returned random data. Maybe Apple intended this to be used for future updates. But we all know that never happened...

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Apple II

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