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Apple II Daughter Boards (Z-Engine / Grappler Plus)

Apple II Daughter Boards (Z-Engine / Grappler Plus) Troubleshooting 43 posts Dec 30, 2015 — Feb 27, 2016
I would like to test a Grappler Plus card for which I don't have a ready cable (to printer).  Is that possible?  When I try to enable the slot it's in the machine doesn't produce a response on the screen I can use to debug.

I also want to test the Z80 coprocessor card.  I found three "ALS CPM Card" disk images (in .po) format that I'm hoping - as they say - are ProDOS, boot, and CP/M disks respectively, and it should then be self-evident.  But if anyone knows of the manual that'd be fantastic.

And to bump the previous, but less interesting paragraph, any sort of online list detailing how to test a grappler would be appreciated.

The Grappler Card is a parallel printer card. Typing "PR #[slot the card is in]" will cause it to not give a prompt because all commands are now going to the printer and not the screen. Typing "PR #0" should return it back to the screen. This is true with all printer cards - parallel and serial. Only real way to test it is to have a printer attached to the card, but if it goes out and back with the PR Command, it should be working fine. The rest is configuring the card to meet the printer's options with dip-switches on it.

If I remember correctly, the C\PM Boot disk needs to be formatted in Apple DOS 3 or 3.3. It wont work in ProDOS. The other disks needs to be formatted in C\PM. You will need the 16K Language card in the Apple II/II+ for a full 64K.

mp.ls