Commodore Business Machines’s 3.5 inch disk drive for the Commodore 64 and Commodore 128. The drive stores 800 kilobytes using an MFM format which is different from both messy-dos 720 kb, and the Amiga 880 kb formats.
The 1581 supports a poor imitation of directories which are really just partitions and largely unused. It also supports burst loading like the Commodore 1571, but is actually faster as it is better designed. It has 3160 blocks free when formatted.
The 1581 is the highest density C64 serial bus drive made by Commodore. However Creative Micro Designs (CMD) make the FD2000 (1.6MB) and (until recently) the FD4000 (3.2MB) 3.5″ disk drives. GEOS users like 1581s as they are very fast when used with GEOS.
See also Commodore 1541, Commodore 1571.
- Commodore 64
computer (C64) An 8-bit Commodore Business Machines personal computer released around September 1981. Prototypes were (apparently) made before Christmas 1980 (and shown at some computer fair). The CPU was a 6510 from MOS Technology (who were a wholly owned subsiduary of Commodore at this time(?)). The C64 had 64 kilobytes of RAM as standard and […]
- Commodore 64dx
- Commodore 65
computer (Or Commodore 64DX, C65, C64DX) The last 8-bit computer designed by Commodore Business Machines, about 1989-1991. The C65 boasts an ugly collection of custom integrated circuits which makes even the Amiga hardware look standard. The core of the C65 chipset is the CSG 4510 and CSG 4569. The 4510 is a 65CE02 with two […]
[uhg-lee] /ˈʌg li/ adjective, uglier, ugliest. 1. very unattractive or unpleasant to look at; offensive to the sense of beauty; displeasing in appearance. 2. disagreeable; unpleasant; objectionable: ugly tricks; ugly discords. 3. morally revolting: ugly crime. 4. threatening trouble or danger: ugly symptoms. 5. mean; hostile; quarrelsome: an ugly mood; an ugly frame of mind. […]