User`s guide

Appendix E
BDOS Function Summary
Table E-1. BDOS Function Summary
Function Function Name Input Parameters Returned Values
0 System Reset none none
1 Console Input none A = Char
2 Console Output E = char A = 00H
3 Auxiliary Input none A = char
4 Auxiliary Output E = char A = 00H
5 List Output E = char A = 00H
6 Direct Console I/O E = 0FFH/ A = char/status/
0FEH/ none
0FDH/
char
7 Auxiliary Input none A = 00/0FFH
Status
8 Auxiliary Output none A = 00/0FFH
Status
9 Print String DE = .String A = 00H
10 Read Console Buffer DE = .Buffer0 Characters in buffer
11 Get Console Status none A = 00/01
12 Return Version Number none HL = Version (0031H)
13 Reset Disk System none A = 00H
14 Select Disk E = Disk A = Err Flag
Number
15 Open File DE = FCB A = Dir Code
16 Close File DE = FCB A = Dir Code
17 Search for First DE = FCB A = Dir Code
18 Search for Next none A = Dir Code
19 Delete File DE = FCB A = Dir Code
20 Read Sequential DE = FCB A = Err Code
21 Write Sequential DE = FCB A = Err Code
22 Make File DE = FCB A = Dir Code
23 Rename File DE = FCB A = Dir Code
24 Return Login Vector none HL = Login Vector
25 Return Current Disk none A = Cur Disk#
E-1