View source for Exos

__NOTOC__
{{Infobox

|image        = [[File:Rex9805_Exos_v3_Retroport_Small.jpg|300 px|Exos V3]]
|imagestyle   = 
|headerstyle  = background:#ccf;
|labelstyle   = background:#ddf;
|datastyle    = 
|caption      = Exos Rex Version
|captionstyle = 

|header1 = From the manual:
|label1  = 
|data1   = 
|header2 = 
|label2  = CTRL + K
|data2   = Display drive error channel
|header3 = 
|label3  = CTRL + O
|data3   = OLD function
|header4 = 
|label4  = CTRL + U
|data4   = Enable saving RAM under Basic ROM
|header5 =
|label5  = CTRL + S
|data5   = Transfer program into RAM floppy
|header6 =
|label6  = CTRL + L
|data6   = Transfer program from RAM floppy
|header7 =
|label7  = CTRL + V
|data7   = Swap program with program in RAM floppy
|header8 =
|label8  = CTRL + F
|data8   = Increases stepper speed in drive
|header9 =
|label9  = CTRL + X
|data9   = List Basic program from current position
|header10 =
|label10  = CTRL + Z
|data10   = List Basic program 50 lines before current position
|header11 =
|label11  = CBM + F1 and CBM + F3
|data11   = Transfer screen RAM to RAM drive
|header12 =
|label12  = CBM + F5 and CBM + F7
|data12   = Transfer screen RAM from RAM drive
|header13 =
|label13  = CTRL + A
|data13   = Disable fast loader
|header14 =
|label14  = F1 / F3 / F5 / F7
|data14   = LIST / RUN / LOAD / DIRECTORY
|header15 =
|label15  = F2 / F4 / F6 / F8
|data15   = SYS 32768 / SYS 4096 * 12 / SAVE" / CLOSE7:OPEN7,8,15"
|header16 =
|label16  = CTRL + Reset
|data16   = Avoid cartridge start and reset protection (SpeedDOS reset)
}}

''Exos'' was developed by ''J.Schemmel'' and released by the german paper magazine 64'er in the December issue of 1986. It was [[:File:64er_86_12_Exos_v3.pdf|published as a ROM patch]] which copied the original C64 Kernal to $2000 and patched it there. The reader was supposed to use a monitor to save the new ROM then. The ROM is simply burned to an 8k eprom and added to the C64 using a kernal switching board then. ''Exos'' does not require a change on the drive ROM.

''REX Datentechnik'' released ''Exos v3'' as a cartridge (order number 9805).

''V-DOS'' by ''Völkner Electronic'' (order number 9716) was created by ''J.Schemmel'' as well and is said to be the same as the ''Rex Datentechnik'' cartridge release.


==Functionality==

* Fast serial load (can be disabled)
* LOAD"$",8 redirected to screen output on direct mode
* Start and end address output
* OLD function
* RAM floppy functions
* some extended LIST support
* modified reset routine (hold CTRL during reset)

==Notes==

* ''Joe'' as hacker of the V4 Exos version describes the applied changes as:
** changed colors back to commodore-blue and reset message closer to original C64
** jsr $fd15 doesn't write vectors to ram at $fd30
** fixed bug preventing that load"$" prints on screen instead of loading to basic (a correction printed in a 64'er issue)
** autostart after reset on write-protected floppies (the only new feature)

* Exos is known to be not the most reliable speeder due to the increased speeding of the stepper motor within the drive

== Binaries ==

[[Media:Kernal_ROM_all_rr.c64.org_2011-06.rar|Kernal_ROM_all_rr.c64.org_2011-06.rar]] contains:
* Exos v3 and v4 kernal.rom
* Exos patch program
* V-DOS 3 kernal.rom
* [[:File:64er_86_12_Exos_v3.pdf|64er 12/1986 Exos v3 german manual as pdf]]
* [[:File:V-DOS_3_Anleitung.pdf|V-DOS 3 german manual as pdf]]

{{quote|Thanks to [http://c64.berrydejager.com/ Berry de Jager] for the V-DOS 3 dump!}}

== Weblinks ==

* [http://www.c64-wiki.de/index.php/EXOS Exos at german c64-wiki]
* [http://retroport.de/Rex.html Exos at retroport.de Rex Section] and [http://www.retroport.de/Hardware_D-E.html http://www.retroport.de/Hardware_D-E.html]
* [http://csdb.dk/release/?id=97406 ''Exos v3 (executable)'' at CSDb]
* [http://csdb.dk/release/?id=48091 ''Exos Booty'' (standalone loader) by Relax at CSDb]

[[File:Exos_v3.gif|center|border|Exos v3 Screenshot]]

[[Category:Exos]]
[[Category:Cartridge_Speeder]]