Editing Acorn Electron (section)

====Slogger Electron Disc System and Pegasus 400====
Slogger, an established producer of expansions and a reseller of other disc systems, introduced the Electron Disc System in early 1987, priced at £74.95, featuring the Cumana Floppy Disc System interface,<ref name="electronuser198704a">{{ cite magazine | url=https://archive.org/details/ElectronUserVolume4/Electron-User-04-07/page/n13/mode/1up | title=New Release | magazine=Electron User | volume=4 | issue=7 | date=April 1987 | access-date=18 January 2021 | page=74 }}</ref> which was combined with an Acorn-compatible DFS, SEDFS, having the capability of reading 40-track discs on 80-track drives plus support for Slogger's tape-to-disc conversion products,<ref name="electronuser198704">{{ cite magazine | url=https://archive.org/details/ElectronUserVolume4/Electron-User-04-07/page/n4/mode/1up | title=Disc power gives Electron a boost | magazine=Electron User | volume=4 | issue=7 | date=April 1987 | access-date=18 January 2021 | page=5 }}</ref> and reported as offering "virtual 100 per cent 8271 emulation" for compatibility with traditional DFS software.<ref name="electronuser198706">{{ cite magazine | url=https://archive.org/details/ElectronUserVolume4/Electron-User-04-09/page/n55/mode/2up | title=DFS upgrade with BBC {{sic|compata|bility|nolink=y}} | magazine=Electron User | volume=5 | issue=9 | date=June 1987 | access-date=19 January 2021 | last1=Smiddy | first1=Mark | pages=56–57 }}</ref> The SEDFS ROM was also available separately for existing Cumana interface owners, priced at £24.95.<ref name="electronuser198704a" />

The SEDFS was later bundled with Slogger's own cartridge-based interface and a 40/80-track switchable drive offering up to 400&nbsp;KB storage per disc, with the bundle taking the Pegasus 400 name, introduced as part of a sales tour towards the end of 1987. This package of interface and drive cost £130.<ref name="electronuser198712">{{ cite magazine | url=https://archive.org/details/ElectronUserVolume5/Electron-User-05-03/page/n5/mode/1up | title=Slogging around the country | magazine=Electron User | volume=5 | issue=3 | date=December 1987 | access-date=18 January 2021 | page=6 }}</ref> The precise DFS variant used by the Pegasus 400 system kept PAGE at &E00 and introduced "typeahead" support, permitting keystroke buffering during disc activity on systems with the Turbo-Driver or Master RAM Board fitted and enabled.<ref name="electronuser198901">{{ cite magazine | url=https://archive.org/details/ElectronUserVolume6/Electron-User-06-04/page/n24/mode/1up | title=Driving hardware | magazine=Electron User | volume=6 | issue=4 | date=January 1989 | access-date=20 January 2021 | last1=Waddilove | first1=Roland | pages=25–26 }}</ref>