There were also custom PROMs for Paperclip and CalcResult and I believe others. Some of these competed for the same address space which lead to the development of ROM switchers- I have a couple of different types which could hold 3 different ROMS. These were accessed through a small external switch cabled to the switcher. In the Toronto Ontario area, Visicalc was "deROMMED" early in the game and the unprotected version circulated widely. Ernie Richard wrote: > In article <008501ca6f37$b5b590a0$1e04a8c0@ad.mediawebbsupport.se>, > "Anders Carlsson" <anders.carlsson@sfks.se> writes: > > >> [...] Interestingly enough almost all of them origin from >> earlier PET 3000 and 8000 versions, on which there was no cost effective way >> to create dongles, thus the business software on the PET side seemed >> completely unprotected? >> > > VisiCalc for the CBM 8032 was protected by a custom PROM you placed > into one of the empty sockets on the motherboard. > > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 9.0.709 / Virus Database: 270.14.89/2539 - Release Date: 12/01/09 14:32:00 > > Message was sent through the cbm-hackers mailing listReceived on 2009-12-02 16:00:04
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