Re: [Freedos-user] int notation.

2012-01-25 Thread C. Masloch
> The INT xx.yy notation has been around for a loong time, doubt > that there is anyone who can put a claim on having invented this b > now... ;-) As you can see by the way I phrased it there, I never claimed that Bret or I was the _sole_ inventor ;) And you're absolutely right, I might h

Re: [Freedos-user] int notation.

2012-01-24 Thread Ralf A. Quint
At 03:13 PM 1/24/2012, C. Masloch wrote: >I've been out of the loop on development for a while. Bret, do you, >incidentally, remember whether we came up with this one independently, or >how did it develop? I honestly would have to search through old mail again >to answer that myself. The INT xx.yy

Re: [Freedos-user] int notation.

2012-01-24 Thread C. Masloch
> I don't remember where I saw it first -- it might in fact have been > something from you. It seems to be a relatively common practice now, > though. Certainly common enough to cause the OP question here! > Personal preference. As there is no formal definition, as long as the > reader ca

Re: [Freedos-user] int notation.

2012-01-24 Thread Bret Johnson
> Somewhat amusing that Bret would describe this "shorthand" in a > much shorter way than I did. There is no formal definition of this, at least that I've ever seen. It's just a convenient way of talking about code at a high/conceptual level in forums and e-mails, without actually needing to ex

Re: [Freedos-user] int notation.

2012-01-24 Thread C. Masloch
Somewhat amusing that Bret would describe this "shorthand" in a much shorter way than I did. I've been out of the loop on development for a while. Bret, do you, incidentally, remember whether we came up with this one independently, or how did it develop? I honestly would have to search throu

Re: [Freedos-user] int notation.

2012-01-24 Thread C. Masloch
> Recently I have seen ints such as: intxx.yy; is this something new, or I > just don't get out much? Is the 'yy' just the selection within the int > function or what? Yes, some use this still rather unusual/new notation to concisely refer to interrupt calls. I am among those; you might have

Re: [Freedos-user] int notation.

2012-01-24 Thread Bret Johnson
INTxx.yy is a "shorthand" notation people use to indicate an INT xx with subfunction yy. The yy is usually put into one of the CPU registers before the call (AH in many cases). In addition, the xx and yy are assumed to be hex. Example: INT 21.4C would be coded as: MOV AH,4Ch INT 21h

[Freedos-user] int notation.

2012-01-24 Thread kurt godel
Here's a quick question: I have used software interrupts, mostly with int86/union regs; say int 34 for the mouse, with another integer loaded into a register to select within that int. Recently I have seen ints such as: intxx.yy; is this something new, or I just don't get out much? Is the 'yy' just