Apple II

Any reason to keep Hayes Micromodem card?

In the last year I've managed to acquire a Micromodem card or two.

I really can't think of a more useless piece of retro-tech. All the same, I'm reluctant to simply toss them in the trash without checking here first. Is there any reason at all to keep these?

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z80 card for apple II

I'm looking for a z80 card for apple II

do I need to buy card + software...
(software are specific to each card)

or I can buy a card alone then I find the software on internet ?
(card more or less compatible and using the same software)

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Question on ProDOS SYS Files

I have a simple question:
How do you read ProDOS SYS files and possibly edit it?
I know a command to run it, but not to actually view the content.

Also, how do you create a bootable disk of your own program?

My plan is to 'dissect' a program (I got AppleWriter in mind) and learn it.

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Apple IIGS PSUs

Is there a version of the Apple IIGS PSU that has a switch for input voltage to select between 110 and 220 volts? To be more specific, has this variation been sold in the US market?

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Reading .bin files

I have a question that seems to be basic to you guys but for some reason I am not able to find the answer anywhere.
The question is: How do we read .bin file on Apple II?

I know that .bin files are binary images on any platform. I can easily use it on Linux, but I don't even know how it works on Apple II.
The files in the discussion are "supposed to be" disk images inside a zip archive that I downloaded off the Internet.

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A2M6014 RGB monitor on Apple ///

Will the A2M6014 monitor work correctly on an Apple ///? Perhaps more importantly, does it come with the requisite cable?

I know this was originally sold for the //gs. I suppose it could be balanced on top of a ///....

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Apple IIe Computer-assisted learning technology software from Don Johnson Incorporated

Doe anybody have Apple II Assisted technology software from Don Johnston Incorporated?

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Kids React To Old Computers

Kids seeing the venerable Apple ][ for the first time. Some of the reactions are priceless.

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LCD/VGA Interface in the Apple II

Hi all,

im researching a shr VGA/LCD solution for the Apple //e and IIgs. Since the VOC has demonstrated the possibility of SHR in the Apple //e and as there is a Carte Blanch bitstream for SHR available, i have looked deeper into the matter. My results with the CarteBlanche are not as promising as i thought. A powerful display-solution needs more memory than the 2x128k Sram on the CarteBlanche. The other Problem is, that the CB is very rare (only 50 were ever produced).

I have found some nice LCD-Controller that feature 8-bit interfaces, and 6800/8080 compatibility (3.3V though).
SSD1963: 'intelligent' Framebuffer
RA8875: enhanced Graphics LCD Controller

Both Controllers allow up to 800x480px resolution and offer up to 16bit (RA8875) and 24bit (SSD1963) color.
The RA8875 has several Text-modes, supports Graphics-functions and allows DMA (and BitBLT) functions with an external Flash of up to 16mb.
The SSD1963 has a direct 24bit interface, that can be configured for use with a 8bit-bus. This Chip does not have any Graphics or Text-Functions but offers some Bitmap-modes.

EDIT: i have added the Appnote for the RA8875 as well as Info on the Proto-board im going to use for the CarteBlanche.

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Repairing an Apple Keyboard II

I bought a partially working Apple Keyboard II (M0487). According to the seller the letter 'E' and the top row of the numeric keypad isn't working. Is it repairable and what needs to be done?

Thanks in advance!

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