home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Assembly 1994 - The 3rd Phase
/
ASMROM94.mdf
/
c64
/
c64sas94
/
lpt64.doc
< prev
next >
Wrap
Text File
|
1994-11-26
|
2KB
|
42 lines
_____________________________________________________
LPT64 connector (by Miha Peternel & Uros Platise)
The LPT64 connector allows connection of CBM IEEE devices (disk drives,
printers) and C64 compatible tape drives to PC's LPT port.
LPT64 connector is compatible with X1541 type of connector. It does
not require a full featured LPT port, a simple printer port will do.
C64S software allows C64 to PC data transfers as well as real-time
communication of emulated C64 programs with external CBM IEEE devices.
The connector schematics can be found in LPT64.BMP Windows bitmap file.
Text files LPT1541.DOC and LPTTAPE.DOC describe connector specs separately.
The following notes go to the LPT64.BMP schematics:
- The LPT connector part (top) needed is MALE. The schematics shows
pin layout as seen from the connecting side of male connector. When
you solder wires from the rear side of the male connector, you need
to make a MIRROR IMAGE to connect the right pins.
- The CBM IEEE connector part (bottom left) is also MALE. However
the layout drawn is as seen from the rear (non-connecting) side of the
male connector. When you solder, do it exactly as it is drawn, do not
mirror.
- The TAPE connector part (bottom right) is a part of printed board,
dimensions 1 inch (width) times 2 cm (may be longer). The metal
stripes are 2 mm wide, with 2 mm of non-metalized board inbetween.
The hole is cut between the 2nd and 3rd metal stripe, with dimensions
1 mm (width) times 0.5 inch (length).
- +5V source may be a normal 4.5 battery. Another way of getting +5V
is from the PC joystick connector.
- The lead between LPT part and IEEE part is recommended to be shorter
that 2 m. Longer lead (I use 0.7 m with no problems) may be a cause
of communication difficulties. I suggest less than 1 m just to be sure.
- The lead between LPT part and TAPE part should be even shorter,
less that 0.5 m. Again longer lead may cause load errors. I use 0.1 m
with no problems. I suggest not more than 0.25 m as the tape drive is
also equipped with it's roundabout 0.5 m tail.