Exos
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Revision as of 18:47, 8 May 2013 by Count Zero (talk | contribs)
ExOS was developed by J.Schemmel and released by the german paper magazine 64'er in the December issue of 1986. It was published as a ROM patch which copied the original C64 Kernal to $2000 and patched it there. The reader was supposed to use a monitor to save the new ROM then. The ROM is simply burned to an 8k eprom and added to the C64 using a kernal switching board then. ExOS does not require a change on the drive ROM.
REX Datentechnik released Exos v3 as a cartridge (order number 9805).
 ExOS Rex Version | |
| From the manual: | |
|---|---|
| CTRL + K | Display drive error channel |
| CTRL + O | OLD function |
| CTRL + U | Enable saving RAM under Basic ROM |
| CTRL + S | Transfer program into RAM floppy |
| CTRL + L | Transfer program from RAM floppy |
| CTRL + V | Swap program with program in RAM floppy |
| CTRL + F | Increases stepper speed in drive |
| CTRL + X | List Basic program from current position |
| CTRL + Z | List Basic program 50 lines before current position |
| CBM + F1 and CBM + F3 | Transfer screen RAM to RAM drive |
| CBM + F5 and CBM + F7 | Transfer screen RAM from RAM drive |
| CTRL + A | Disable fast loader |
| F1 / F3 / F5 / F7 | LIST / RUN / LOAD / DIRECTORY |
| F2 / F4 / F6 / F8 | SYS 32768 / SYS 4096 * 12 / SAVE" / CLOSE7:OPEN7,8,15" |
| CTRL + Reset | Avoid cartridge start and reset protection (SpeedDOS reset) |
V-DOS by Völkner Electronic (order number 9716) was created by J.Schemmel as well and is said to be mostly the same. (Dump missing...)
Functionality
- Fast serial load (can be disabled)
- LOAD"$",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
- v3 to v4 changes are not yet documented
- ExOS is known to be not the most reliable speeder due to the increased speeding of the stepper motor within the drive
Binaries
Kernal_ROM_all_rr.c64.org_2011-06.rar contains:
- ExOS v3 and v4 kernal.rom
- ExOS patch program
- 64er 12/1986 Exos v3 german manual as pdf
- V-DOS 3 german manual as pdf
