| PET -
Technical data
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Also one has been made many
models of PET-CBM with different functionalities, the principal characteristics have
stayed unchanged for all the series: the more evident changing was on memory capacity and
the increase of graphic possibility. The following table shows the technic characteristic
about first model PET-2001 (1977):
| PET 2001 |
| Year of release: |
1977 |
| CPU: |
MOS 6502, 1 MHz |
| RAM: |
4/8/16/32 KByte |
| ROM: |
14 KByte (8 KByte Basic, 4
KByte Kernel, 1 KByte Terminal Interface Monitor [TIM] and 1 KByte reserved to diagnostic
control) |
| Operating system: |
Microsoft BASIC (into ROM) |
| Text resolution: |
40 x 25 (monochrome) |
| Graphic resolution: |
none |
| Audio: |
none |
| Keyboard: |
The original keyboard was
a QWERTY with 73 keys, enough uncomfortable. In the following versions it was changed with
a standard keyboard (see photo) |
| Storage mass memory: |
Internal tape recorder
Datassette, IEEE488 plug for connection with double floppy drive CBM 8250 or external recorder |
| Prese I/O: |
1 x IEEE488, 1 x
Datassette |
| Monitor: |
Versions depend: 9"
b/w, 12" green monochrome or b/w. |
VERSIONS DIFFERENCES:
- PET 2001 - Several
versions exsist with differences in RAM memory (4k up to 32k) and integrated monitor
(9" and 12"). The following models had a "business" keyboard and major
version of ROM (up to 4.0). The normal numeration foresees the number "2001"
following by a number that show the amount of RAM.
- CBM 30xx - Computers
with this initial marks models sold in Europe with 9" monitor and
"business" keyboard. They don't have the capability of manage the audio, yet. Numbers
"xx" show the amount of RAM (8k, 16k, and 32k). In Germany the model 3001 was
appeared, a 2001 version with extended keyboard.
- PET/CBM 40xx With
9" monitor.
- PET/CBM 40xx With
12" monitor, a new motherboard version and the possibility to show 80 columns. Now
there is a simply "beeper" and the 4.0 ROM version.
- PET/CBM 80xx With
12" monitor not separable from case. The technical and functional characteristics are
the same of previous model.
- PET/CBM 80xx With
12" monitor and the possibility to separate the keyboard. There are two versions with
different motherboards: the first of these didn't get in on the new case model, so some
connections are made with cables that get out and get in on the computer rear. The IEEE488
plugs are absent.
|
Images on
this page are taken
from these links
Thanks to Max Spillus
that provided me pages dedicated to PET
PET-2001 (1977) with
original keyboard.
The PET-CBM 8032
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