How to convert an APPLE's floating-point number to a printable ASCII?

1)Howto convert ascii to "float"
2)Howto convert "float" to ascii
The Float-point number is stored in APPLE's format which is discussed in "I can't understand FLOATING POINT REPRESENTATION"

I think I can point you in the right ...

Use the source, Luke! (I couldn't resist the Star Wars-ish reference... )

Review the "Floating Point Math" section.

To continue the previous post...

I think Garth just started a thread on Forth. Not sure if it meets all or any of your requirements, but check it out. Also review the 6502.org links.

Regarding CPUs, Mike (he who hosts this forum) can get DIP packages for sure.

Oops! I should've noticed that.

Any reason why you didn't use the Apple II ROM input routines? Either $FD1B or $FD35? (Sorry if it's a dumb question - I've never used EhBASIC and it's been a long time since I really did anything on the Apple II.)

Check out this link. Or, Google for "apple2 emulator" .

Quick summary:
* I know that ApplePC was written in assembly, but the source was never released to my knowledge.
* AppleWin is pretty good, but I think it's all C. The source code is floating around somewhere... I have a copy somewhere too ...

Would it hurt to use a 25.000 mhz crystal? The total scan width for a line would fall longer than standard timing, 200 ns longer, and verticle sync would be 59.524 hz (standard timing is 59.940 hz).

I really don't think it would hurt, i mean vga cards can switch resolutions dynamically changing ...

I did it in 10 minutes and had no brain that morning....

That isn't bad for a 10 minute hack. I think it would take me that long to find the appropriate charts (which I don't want to name..)

thansk on the debug, though.

De nada.

Too bad we never got a response, so a fun hack was wasted ...

by the way for giggles, take my data table and convert the hex to its ASCII equivalents. Its another laugh for ya....

The datatable needs to be corrected for typos. :wink:

.DB $c4, $c5, $c1, $d2, $a0, $d4, $c5, $c1, $c3, $c8, $c5, $d2, $ba, $a0
.DB $d0, $c1, $ce, $d4, $c5, $cc, $c9, $d3, $a0 ...

Sounds interesting. I've added parts to my Digi-Key order... both the serial EEPROM as well as the MMC adapter.

Regarding MMC, where are you getting information? I did find the system summary at the MMC Association web site. Is that sufficient? (I've just skimmed it.)

The good news is that the ...

CF has a whopping 50 (or so) connections to make, and I'm sure you won't find any at 5V. I'd prefer to see something like MMC (MultiMedia Card), which only has 7 connections (including power and ground). In SPI mode the interfacing is much simpler, and converting from 5V to 3V for just four ...

I actually was thinking that CompactFlash with the FAT format would be the most useful...

This isn't quite the right topic - but, as I'm working on video, I'll post it here.

A quick update - I was going to work with serial communications. I came across a little "glitch" in my design, and since my final setup will actually be more of a parallel solution, I'm not going to pursue it. My ...

One that looks really easy to use is MultiMediaCard in SPI mode. The MMC is smaller than CF, has only 7 connections (including power and two grounds), the connector is under $2 at Digi-Key. And for the latest, at least two companies are introducing MMCs this quarter with a gigabyte in this card ...

Hi all! I would have posted a message this morning - except my computer froze when I clicked the preview button. Go figure, you update the software for your DVD player and everything goes downhill from there.

My son has also gotten enough candy to keep me going for weeks and weeks! (c:

i've ...