This is an overview of the VICE IEC bus emulation (x64 example).


/----<---- diskcontents-iec <-- diskcontents --> diskcontents-block ---->----\
|                                                                   \-> *B   |
|                                /-> cia1581 -\                              |
| 6510core --> c64cia2 -> iecbus --> via1541 --> drive (TDE) --> *A          |
|          \                     \->-\                                       |
|          |                         |                                       |
|         / /-----------<------------/            c1541 >--\--------------->-\
|        /  |                                   monitor >--\-\               |
|       /   \- s*-iec-device -\                              |               |
|       |                      \             /-> realdevice  |               |
|       \-> traps --> s*-trap --> s*-iec-bus                 \               |
|                              /             \-> fsdrive -->--> vdrive-iec >-\
\----> s*-iec-lib --> s*-iec -/                          \-> fsdevice        |
    /                                                    \-> interface-s*    |
    |                                           /- *B                        |
    \--------<-------- realimage <-- diskimage <-- vdrive <----------<-------/
                        rawimage <-/            \- driveimage <-- *A
                         fsimage <-/            \----- wd1770 <-/
                                                \-------- fdc <-/

User of the IEC bus system
--------------------------
6510core:
IEC bus access by the host CPU

diskcontents:
IEC bus and block acccess by image content lister

monitor:
IEC bus access by the build in monitor

c1541:
IEC bus and block acccess by the c1541 stand-alone utility


Backends used by the IEC bus system
-----------------------------------
fsimage:
Block access to disk images files on the host file system

rawimage:
Block access to raw devices like a host (PC) disk drive

realdevice:
IEC access to real IEC devices connected to the host (PC)

interface-serial:
IEC access to the printer emulation

fsdevice:
File access to files on the host file system