[Coco] Basic's loadm and discontinuous binaries

[Robert Gault]

To add to what Art said, and more specifically as stated in the "Unravelled" series:
"Binary data is stored on the disk as one large block preceded by a five byte preamble. The data 
block is followed by five more bytes which are another preamble if there is another block of data 
following or the five bytes are a postamble if there are no further data blocks."

BYTE		PREAMBLE		POSTAMBLE
  0		$00 preamble flag	$FF postamble flag
  1,2		length of block		$00,$00
  3,4		load address		EXEC address , if there is one, or $00,$00

Don't be confused by the use of "data" above. The contents can be anything; data for a text or 
graphics screen, an ml program, a Basic program, bytes to erase memory, etc..

Robert

Arthur Flexser wrote:
> Yes, this ability was added with Extended Basic.  Attempts to load code
> above $8000 if you are in RAM/ROM mode will fail, though, since you can't
> store new data to a ROM address.
>
> Art
>
> On Sat, Jan 26, 2019 at 5:14 AM Joel Rees <joel.rees at gmail.com> wrote:
>
>> Can loadm properly load a binary with one org low, code, and a second load
>> high, with constant strings -- and a gap between the two?
>>
>> Anybody know?
>>
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>