[comp.sys.cbm] 8551/6551 +4 PLUS 4

kenneke@jacobs.cs.orst.edu (Ronald Reagan) (06/17/88)

( LINE EATER)

 I was tinkering with a commodore +4 that I had bought at aa garage sale
 blew out the serial port. I traced the lines to a chip marked 8551 (or what
 looked like 8551). No where in  the civilized could I find a chip that fit
 that description . 
 I suspect the chip may be identical to the 6551, but wanted to make
 sure before i put one in and really fried the computer. Does anybody out
 there know anything that might help me???

 Thanks,
  kenneke@jacobs.cs.orst.edu

daveh@cbmvax.UUCP (Dave Haynie) (06/17/88)

in article <5147@orstcs.CS.ORST.EDU>, kenneke@jacobs.cs.orst.edu (Ronald Reagan) says:
> 
>  I was tinkering with a commodore +4 that I had bought at aa garage sale
>  blew out the serial port. I traced the lines to a chip marked 8551 (or what
>  looked like 8551). ... I suspect the chip may be identical to the 6551, ...

Yup, you want a 6551.  A 6551A, to be exact.  Nicest feature of the PLUS/4 is
this real ACIA.

>  Thanks,
>   kenneke@jacobs.cs.orst.edu
-- 
Dave Haynie  "The 32 Bit Guy"     Commodore-Amiga  "The Crew That Never Rests"
   {ihnp4|uunet|rutgers}!cbmvax!daveh      PLINK: D-DAVE H     BIX: hazy
		"I can't relax, 'cause I'm a Boinger!"