CBM-4000 series
The 4000 series is the successor to the PET 2001 or the CBM 3000 series from Commodore . As there, a MOS Technology 6502 works with a 1 MHz clock frequency as the CPU.
The computer was equipped with BASIC version 4.0, which, in contrast to its predecessor, has been expanded to include some disk commands.
There was a THIN and FAT version of every model except the 4064. The difference was that the THIN version was not expandable and only had a 9 "instead of a 12" monitor integrated. The FAT version could be expanded to 80 characters by some re-soldering (over 20 soldering jumpers plus video RAM enlargement) and thus practically became an 8000 character .
In terms of hardware, the THIN version was identical to the previous 3000 version, but it already had the new BASIC; the FAT version also had the board of the later 8000s and their monitor, but the latter was operated with 40 characters.
The following models were available:
- 4008 with 8 KB RAM and 40 characters
- 4016 with 16 KB RAM and 40 characters
- 4032 with 32 KB RAM and 40 characters
- 4064 with 64 KB RAM and 40 characters
The 4064 was intended as a school version of the C64 , therefore also sometimes referred to as the C4064, and had switched its circuit board and BASIC, albeit to monochrome output, and also various software differences that made it incompatible with both the C64 and the other 4000s did. It was a failure.
The software included a. the word processor Wordpro and the spreadsheet program Visicalc are available. In addition to the CBM- BASIC Version 4.0, the Pascal compiler TCL-Pascal could be used for programming . As with the CBM-3000 series, it was also easy to program the 6502 processor in assembler . There were extensions to the Commodore-BASIC with many useful commands that were delivered in one or two ROMs (maximum 8 KByte) and inserted into free sockets on the board.
These computers also had a matching range of peripheral devices , especially floppy disk drives and printers.
literature
- Adam Osborne, Caroll S. Donahue: CBM-Computer Handbuch, te-wi Verlag 1981, ISBN 3-921803-13-6
Individual evidence
- ^ Raeto West: Programming the PET / CBM, Level Limited 1982, ISBN 0-9507650-0-7
- ^ Franz Wunderlich: Working more successfully with CBM, Franzis-Verlag 1982, ISBN 3-7723-7051-9
