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Split display [+]................................................................................. 192
Draw ellipse/circle [+]....................................................................... 192
Draw line/box [+].............................................................................. 193
Select inverse video mechanism [+]................................................ 194
Select text font [+]............................................................................ 195
Set LCD window position [+]............................................................ 196
Looking keys [+]............................................................................... 197
Get graphics font [+] ........................................................................ 197
Turn backlight (option) on/off [+]...................................................... 198
Reset screen parameters [+] ........................................................... 198
Get contrast and backlight (option) state [+].................................... 199
Set bold attribute mask [+]............................................................... 199
22.
INT 11H, Check System Equipment ......................................... 201
Use...................................................................................................... 201
Entry .................................................................................................... 201
Exit ...................................................................................................... 201
Comments........................................................................................... 201
23.
INT 12H, Check Memory Size.................................................... 203
Use...................................................................................................... 203
Entry .................................................................................................... 203
Exit ...................................................................................................... 203
Comments........................................................................................... 203
24.
INT 13H, Disk Handler................................................................ 205
Use...................................................................................................... 205
Entry .................................................................................................... 205
Exit ...................................................................................................... 205
Comments........................................................................................... 206
Reset disk........................................................................................ 207
Read disk status .............................................................................. 207
Read sectors ................................................................................... 207
Write sectors ................................................................................... 208
Verify sectors................................................................................... 208
Format disk cylinder ........................................................................ 209
Format bad track ............................................................................. 210
Format drive .................................................................................... 210
Read drive parameters .................................................................... 211
Initialise drive parameters................................................................ 211
Read long sector ............................................................................. 211
Write long sector ............................................................................. 212
Seek to cylinder ............................................................................... 212
Alternate reset disk.......................................................................... 213
Read test buffer ............................................................................... 213
H
MP2500 System Developer's Guide
USKY
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Table of Contents
Troubleshooting
