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Commodore CBM - Page 439

Commodore CBM
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Operational features
Portable. self-contained
Steel cabinet
44 pounds
Chassis
16'/'" wide.
18'/'"
deep.
14"
high
1/0 connectors for:
8-bit
parallel 1/0 port
IEEE
488 interface
Tape cassette
unit
CPU
MCS
6502 microprocessor
4K.
8K.
16K.
32K bytes
RAM
user memory
(4K
no longer available)
Programmable 1K screen memory
14K
bytes
ROM
memory
Memory
Resident
BASIC
interpreter and operating system
2K
Input/Output
Expansion
ROM
12K additional. total
ROM
26K
Expansion
RAM
(up
to
28K)
additional. total RAM 32K
Compact keyboard
has
73
keys.
2/3
conventional
size
Full-size keyboard
has
74 keys including Shift Lock
140 characters/functions
2 shift keys
26 alphabetic
keys
Numeric pad
28 special symbols
ASCII
characters and symbols ail unshifted
Keyboard
62 graphie keys
Graphie
keys
ail shifted
Reverse-field video charaèters
Alternate programmable character set
6
cu
rsor control tu nctions
Keyediting
Replace characters
Insert characters
Delete characters
Program load and go/stop key
9"
(22.86
cm)
high-resolution screen
Video Display Sereen
1000 character display. 25 lines by
40
characters
8x8 dot mat
ri
x
Full cursor control
Built into
PET
console
or
externally connected
Uses
standard audio magnetic tape cassettes
Tape Cassette Unit
Four tape control keys:
Play. Fast Forward. Rewind. Record
Programmable Tape ReadlWrite
1000 baud optimal
426

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