Tandy 1000 Basic Reference Manual

Chapter 11 I Technical Information
OFFSET LENGTH DESCRIPTION
0
1
39
41
42
43
46
47
48
1
38
2
1
1
3
1
1
1
Mode
FCB
CURLOC
ORNOFS
NMLOFS
***
DEVICE
WIDTH
POS
The mode in which the file
was opened:
1 - Input Only
2
- Output Only
4 - Random I/O
16
- Append Only
32
- Internal use
64 - Future use
128
- Internal use
Disk File Control Block.
Refer to DOS User's Guide
for contents.
Number of sectors read or
written for sequential ac-
cess. For random access,
it
contains the last record
number
+ 1 read or written.
Number of bytes in sector
when read or written.
Number of bytes left in In-
put buffer.
Reserved for future
expansion.
Device number:
0-9
- Disks A: thru J:
255 - KYBD:
254
- SCRN:
253
- LPT1:
251
- COM1:
250
- COM2:
249
- LF'T2: (not available)
248
- LF'T3: (not available)
Device width.
Position in buffer for
PRINT#.
359

Tandy 1000 Specifications

General

Processor	Intel 8088
Processor Speed	4.77 MHz
RAM	128 KB (expandable to 640 KB)
Operating System	MS-DOS 2.11
Manufacturer	Tandy Corporation
Release Year	1984
Storage	Single or double 5.25" floppy disk drive (360 KB), optional hard drive
Sound	Tandy 3-voice sound
Ports	Parallel, Serial
Graphics	CGA (Color Graphics Adapter)
Graphics Modes	320x200, 640x200