Bios Interrupts - Husky MP2500 Manual

19.2 BIOS interrupts

BIOS interrupts provide convenient access to low-level facilities. The
following table summarises the BIOS interrupts provided on MP2500.
Subsequent chapters describe each one in more detail.
The MP2500 BIOS interrupts are compatible with the IBM PC-AT BIOS,
except where the following symbols appear:
[+] means this interrupt provides facilities in addition to those of the
equivalent PC BIOS interrupt. Using these will make better use of
MP2500's potential, but may reduce portability of your programs.
[-] means this interrupt does not provide all the facilities of the equivalent
PC BIOS interrupt. If you wish to use this interrupt, take careful note of the
description of the differences.
If an interrupt has neither of these symbols against it in the following table,
you may safely assume that it behaves as in the IBM PC-AT BIOS.
INT Standard function
05H Print screen
10H Screen control
11H Determine system equipment
12H Determine system memory
13H Disk control
14H Serial port control
15H BIOS extension function
16H Keyboard control
17H Printer control
18H Activate ROM BASIC/end program
19H Boot DOS
1AH Timer/clock control
The BIOS interrupts are described in numerical order in the following
chapters.
Many of the extra BIOS interrupts are used to change MP2500's behaviour,
by altering default settings such as the battery type or keyboard layout.
These changes are in general preserved until the next cold start. A cold
start is produced by a power-up in non-resume mode, or after emergency
breakout or loss of all power.
Chapter 19: The Interrupts
Differences
[+]
[+][-]
[+][-]
[+]
[+]
Not implemented
[+]
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