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- Re: Inconsistency in CP/M Kermit Version 4.09
-
- Problem: Comments in the source-files indicate that the routine which
- processes the "Set Port" command, "prtset" in CPSCOM.ASM, returns
- the port value in the register pair DE for the system-dependent
- routine to process. In fact, the value is returned in the HL
- register pair.
- Solution: Either (1) put a "xchg" instruction after the "shld port"
- instruction in "prtset" and modify all port-setting routines which
- expect the port parameter in HL, e.g., that for those systems using
- iobyte redirection, to get the value from DE (this would be, I
- suppose, philosophically correct since this would correspond to
- the way the baud-rate-setting routine handles things) or
- (2) change the comments in CPSDAT.ASM and CPXLNK.ASM to show the
- return value from "prtset" in HL and modify the "sysprt" routines
- which expect the port value in DE to get it from HL. I chose this
- approach as it appeared that this would involve less code changes
- (the only system I saw getting port values from DE was the Lobo).
- Below are FILCOMs of the appropriate files showing these changes.
-
- File 1) DSKE:CPSDAT.ASM[10,50,KERMIT,CPM] created: 1925 26-Aug-89
- File 2) DSKE:CPSDAT.ASM[10,50] created: 1202 31-Aug-89
-
- 1)4 ; called with value from table in DE
- 1) sysscr: jmp $-$ ; screen setup for file transfer
- ****
- 2)4 ; called with value from table in HL
- 2) sysscr: jmp $-$ ; screen setup for file transfer
- **************
-
- File 1) DSKE:CPXLNK.ASM[10,50,KERMIT,CPM] created: 1826 26-Aug-89
- File 2) DSKE:CPXLNK.ASM[10,50] created: 1157 31-Aug-89
-
- 1)1 ; called with value from table in DE
- 1) jmp sysscr ; screen setup for file transfer
- ****
- 2)1 ; called with value from table in HL
- 2) jmp sysscr ; screen setup for file transfer
- **************
-
- File 1) DSKE:CPXSY2.ASM[10,50,KERMIT,CPM] created: 0743 28-Aug-89
- File 2) DSKE:CPXSY2.ASM[10,50] created: 1210 31-Aug-89
-
- 1)4 mov a,e ;[hh] get the data port value and store at
- 1) sta outmd3+1 ;[hh] the two places we use...
- ****
- 2)4 mov a,l ;[hh] get the data port value and store at
- 2) sta outmd3+1 ;[hh] the two places we use...
- **************
- 1)4 mov a,d ;[hh] now get the baud rate port value
- 1) sta getbd+1 ;[hh] store it in the two places we use...
- ****
- 2)4 mov a,h ;[hh] now get the baud rate port value
- 2) sta getbd+1 ;[hh] store it in the two places we use...
- **************
-
- E-mail replies may be sent to me via Bitnet at mailer@uwalocke.
- Please place on the subject line the phrase <dec10%"bpa"> (less the angle-
- brackets).
- -- Mike Freeman (routing MORF); Bonneville Power Administration; P.O. Box
- 491; Vancouver, Wa 98666; Telephone (206)690-2307 --