Legacy apps in Windows/OS X was Re: Old MS-DOS & Win Software

Allison ajp166 at bellatlantic.net
Thu Dec 8 16:02:38 CST 2005


>
>Subject: Re: Legacy apps in Windows/OS X was Re: Old MS-DOS & Win Software
>   From: Jim Leonard <trixter at oldskool.org>
>   Date: Thu, 08 Dec 2005 15:39:31 -0600
>     To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
>
>Chuck Guzis wrote:
>> Consider on Windows XP that you can still run the following code:
>> 
>> 	mov	cl,9
>> 	mov	dx,offset HWMes
>> 	call	5
>
>What is "call 5"?  I'm having a brain fart right now and can't parse this.
>-- 

Call 5 is the standard CP/M function call to BDOS parameters like what
function is placed in C and DE pointed to string for string output. Goes
all the way back to CP/M-80 V1.x

Allison


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