Apple II

Results / Reports from 'IWMless' beta testers !

Submitted by UncleBernie on August 11, 2025 - 8:19pm

Hi fans -

 

first results from 'IWMless' beta testers are coming in. Here is  a nice video made by Jav:

 

https://www.youtube.com/watch?v=NYFiMEVD79k

 

... which essentially shows how to remove the dead original IWM and how to put the 'IWMless' in.

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Apple II

Help with proRWTS

Submitted by VIBR on August 9, 2025 - 2:46pm

Hello All, 

I continue my work on the smartloader for the smartdisk II, the current version uses prodos and before starting smartloader it fully loads prodos.

My goal is to optimize the loading process, my new approach is to use a custom bootloader and to use DOS3.3 RWTS.

My initial tests are good and it is working I should be able to have evevrything on track 0. 

DOS3.3 RWTS is not optimized and not fast. 

Searching on the net, I found proRWTS2 from Qumba, and I am looking for support to implement it.

My understanding is :

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Apple II

Apple IIGS not responding to keyboard

Submitted by DistantStar001 on August 6, 2025 - 3:37pm

Just as the title says. I have an Apple II GS that is not responding to almost any keyboard inputs beyond reset.

Note: for some reason, this board was modified or came with the connectors for a Stealth GS despite being in an original II GS case. 

So far I have tried 3 separate ADB and one //e keyboards with the same results. All keyboards have been tested on other machines with no problems. 

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Apple II

Applied Ingenuity Hard Drive/PSU Questions for IIGS

Submitted by DistantStar001 on August 6, 2025 - 3:27pm

I recently got an Apple IIGS with… shall we say, issues. But that will be another post. Inside, however, were some pretty cool upgrades including an Applied Engineering RAM GS card with the full 1MB onboard, and an "Inner Drive 40 High Performance Hard Drive System." 

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Apple II

SVA 'ZVX4' 8-inch disk controller card?

Submitted by PraetorX on August 5, 2025 - 11:49pm

Does someone here in the group has the SVA (Sorrento Valley Associates) ZVX4 disk controller card for 8" disk drives?  If so, I am hoping to get the firmware code off of the card.   This would be the code present at $cX00-cXff (X being the slot it's located in) as well as the switched-in card expansion ROM area at $c800-$cffe. 

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Apple II

Apple //c Apple IIc Plus

Submitted by Khaibitgfx on August 5, 2025 - 4:53pm

I'm looking for good quality photo images of the mainboards from the 2c and 2c plus in anyone has them, everything online in the search engines is crapolla.

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Apple II

Apple ][ slot extender

Submitted by Crusty on August 5, 2025 - 10:10am

I have found that the slot extenders for the Apple 2 have been out of stock for some time now.

So I designed a PCB with Kicad and had 5 cards made by PCBWAY .

All worked well but the card edge to fit the slot was a little to short at each end and whilst it was electrically sound did not sit well with me as a finished product.

So a second version has been run up in Kicad and hopefully the card edge to slot will now be a snug fit.

Whilst I do not intend to sell any of these slot extenders, I will make the Kicad files avaiable on GitHub if any one is interested?

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Apple II

Apple II Custom Bootloader

Submitted by VIBR on August 4, 2025 - 7:56am

Hello All,

to continue the series around the smartloader for the smartdiskII, 

Currently, I am leveraging Prodos 8 to start my compiled code. 

I guess i do not need to have the full version of prodos and my objective is to gain loading time. 

What I have in mind, is to have a custom version of DOS with only RWTS and my program to use basic RWTS routines.

Where do I need to write my program in the disk to only have RWTS and then jump to the start of my program ?

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Apple II

Apple II soft reset detection on DISK II

Submitted by VIBR on August 3, 2025 - 7:33am

Hello all, 

I have added a menu loader to the SmartDisk II (stm32 floppy emulator), and it is working great, 

 I would like to detect an Apple II soft reset on the Smartdisk II and my approach would be to count the step motor phase reinit, but it is a bit dirty, 

Is there a better way to detect a soft reset on the Disk II interface ?

Thanks 

Vincent 

 

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Apple II

Apple ii memory select.

Submitted by Maxplayz on August 2, 2025 - 1:00pm

Hi guys i don't understand how to wire up the memory select dip forks for the apple ii. I already have one completed row of TMS4116-15NL in row C from C3 to C10 but I'm unsure how to configure it to work. I think I currently have about 16KB of RAM so far

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Apple II

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