--- Log opened Sun Dec 07 00:00:49 2008
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01:55 < phy1729> How would I convert a floating point number into ASCII in Z80 asm?
01:56 < BrandonW> If you mean how do you get the OS to do it, I believe that's _FormReal.
01:57 < phy1729> I mean true IEEE 754 floating point
01:58 < BrandonW> If you know the IEEE number, surely you understand the format and how you'd go about doing that.
01:58 < BrandonW> Are you asking a general z80 question or how to do it on the calculator?
01:58 < BrandonW> Because this channel's more for calculator programming.
01:58 < phy1729> how to do it
01:59 < BrandonW> On the calculator?
01:59 < phy1729> yes
01:59 < BrandonW> So a floating-point number from something like OP1, right? Like how the OS stores it?
01:59 < BrandonW> The entry point _FormReal. Disassembling it shows the logic behind it.
02:01 < phy1729> My fault, some background I'm writing a new floating point routine because I think BPD is just horrible and some commands don't work properly. So, no not the OP1.
02:01 < phy1729> I need to do something I shall be back
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02:03 < BrandonW> I don't understand what the problem is, you do know z80, right? Whatever format you're trying to convert from, extract the digits, add 30h, and store them in order as a string.
02:04 < BrandonW> For specifics on IEE754 or any other format, I can't help there.
02:09 < phy1729|a> let's say I have 10.11 somewhere (really 701600...00) that's 2.75 how do I convert the binary to ASCII
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02:24 < phy1729> unrelated question do you know how to access the USB port?
02:24 <+_aegis_> yes, he does.
02:25 < phy1729> which port is it?
02:25 <@chronomex> the USB port
02:25 <@chronomex> :p
02:25  * chronomex ducks
02:25  * phy1729 misses
02:25 < BrandonW> Access it in what way?
02:25 <@chronomex> pwnt
02:26 < phy1729> by the OUT and IN command
02:26 < BrandonW> The interface to the USB controller hardware is extremely complicated.
02:26 < BrandonW> Some very old documentation is at http://wikiti.denglend.net/index.php?title=83Plus:OS:84_Plus_USB_Information
02:27 < BrandonW> To interface with it in host mode, the best thing to do is use usb8x.
02:27 < BrandonW> I don't have anything released for peripheral mode, but we can use it in that way, too.
02:28 < BrandonW> For regular calc<->calc or PC<->calc communication, http://brandonw.net/calcstuff/remote8x.zip is good sample code.
02:28 < phy1729> wow that is complicated
03:19 < phy1729> BrandonW	, what environment do you use?
03:20 < BrandonW> For what?
03:20 < phy1729> for coding Z80 asm
03:21 < BrandonW> For programs, I use TASM and DOS' edit. For Flash applications, I use ZDS.
03:50 < phy1729> how do you get random data?
03:51 <+_aegis_> have the end user press a lot of keystrokes in no particular order
03:51 < BrandonW> The R register, or the entry point _Random.
03:51 < phy1729> how do I use the R register 
03:52 <+_aegis_> pop R?
03:52 < BrandonW> I recommend reading some z80 tutorials.
03:52 < BrandonW> Like Learn TI-83 Plus Assembly in 28 Days.
03:52 < BrandonW> But to answer your question, "ld a,r"
03:53 < phy1729> thanks
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04:26 <@efneTI92> [Netham45] Error: No Keyboard Present. Press F1 to Continue.
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--- Log closed Mon Dec 08 00:00:10 2008