29 Jul
2012
29 Jul
'12
2:41 p.m.
On Sun, 29 Jul 2012, Liam Proven wrote:
It should not /require/ MS-DOS 3.3, although that will
give you more
free memory than anything else on an 8086.
On the other hand, AMSTRAD 3.31 will have system specific content, rather
than the generic content of 3.30
NOTE: the number to the right of the period is 30 (1Eh), NOT 3 (03h)
Even pickier: It is a "period", NOT a "decimal point", nor "radix
point";
it serves as punctuation separating an integer, and a 2 digit decimal
integer.
MOV AH, 30h
INT 21h
will return 03 in AL, and 1Eh in AH for 3.30,
03 in AL, 1Fh in AH for 3.31
MS-DOS 2.21 and 3.31 were the ones with the most system specific
customization, such as different versions of MODE.COM , etc.
Also, for those using hard disks, 3.30 had a 32M size limit.; 3.31 was the
first version without the 32M limit.