Gordon, I found my problem. I had to check for CBEIF first before checking for CCIF at the line .PERM5 Mike ----- Original Message ----- From: "Michael J Huslig" <> To: <> Sent: Thursday, November 14, 2002 3:02 PM Subject: Re: [68HC12] EEPROM programming for 9S12A128 > Gordon, > Could I see them too? > > I am using the DP256 and had no problem doing an EEPROM bulk erase and then > copying from RAM to EEPROM. > > However, after adding a protected sector to the EEPROM, I couldn't do a bulk > erase anymore, so I used the following sector modify routine. The routine > compares each sector with the data in RAM. If they are different, I do a > sector modify followed by a word write. It appears that once the program > finds a sector that needs changing, it has to change all the following > sectors. I haven't checked to see whether the sector modify routine is > erasing all the following sectors, or whether when I check the next sector I > no longer can read from the EEPROM. > LDX #USERS_EESTART ;==$400 > LDY #BBRAM1 > .PERM2 LDD 0,X ;CHECK IF SECTOR NEEDS REPROGRAMMING > CPD 0,Y > BNE .PERM3 > LDD 2,X > CPD 2,Y > BEQ .PERM6 > .PERM3 MOVB #ESTAT.ACCERR+ESTAT.PVIOL,ESTAT > BRCLR ESTAT,#ESTAT.CBEIF,$ > JSR WATCHDOG > LDD 0,Y > STD 0,X > MOVB #ECMD.ERASE+ECMD.PROGRAM,ECMD ;SECTOR MODIFY > MOVB #ESTAT.CBEIF,ESTAT > BRCLR ESTAT,#ESTAT.ACCERR+ESTAT.PVIOL,.PERM4 > SWI > .PERM4 BRCLR ESTAT,#ESTAT.CBEIF,$ > JSR WATCHDOG > LDD 2,Y > STD 2,X > MOVB #ECMD.PROGRAM,ECMD ;PROGRAM SECOND HALF OF > SECTOR > MOVB #ESTAT.CBEIF,ESTAT > BRCLR ESTAT,#ESTAT.ACCERR+ESTAT.PVIOL,.PERM5 > SWI > .PERM5 BRCLR ESTAT,#ESTAT.CBEIF,$ ;new line inserted > BRCLR ESTAT,#ESTAT.CCIF,$ > .PERM6 LEAX 4,X > LEAY 4,Y > CPY #BBRAM4 > BLO .PERM2 > RTC > > ----- Original Message ----- > From: "Gordon Doughman" <> > To: <> > Sent: Thursday, November 14, 2002 10:30 AM > Subject: Re: [68HC12] EEPROM programming for 9S12A128 > > Gianni, > > > > I have a set of routines that I wrote for the Cosmic compiler. It provides > > routines that will allow writing a byte, word or long word to any address > > boundary. Essentially the routines allow the small sector Flash to be > > treated as byte writeable EEPROM, erasing & (re)writing information as > > necessary. I can provide the assembly source but no support. I'm sure it > > could be adapted to the icc compiler. Let me know if you're interested. > > > > Regards, > > Gordon > > > > Gianni wrote: > > > > > Hello, > > > > > > I would like to know if anyone has a "C" callable routine to program > > > the EEPROM of a 9S12A128 device. > > > I'm using ICC12 compiler. > > > > > > Thank you very much. > > > > > > > > > > > > -------------------- > > > > > > > > > > > > ">http://docs.yahoo.com/info/terms/ > > > > -- > > =============================================================== > > Gordon Doughman Ph: 937-438-6811 > > Motorola Semiconductor Fax: 937-434-7457 > > Field Applications Engineer Pager: 800-759-8352 Pin: 1304089 > > Suite 175 > > 3131 Newmark Drive > > Miamisburg, OH 45342 > > > > Check out my HC12 book at: > > http://www.rtcgroup.com/books/ > > > > > > > > > > -------------------- > > > > > > > > ">http://docs.yahoo.com/info/terms/ > > > > > > >

Gordon, Could I see them too? I am using the DP256 and had no problem doing an EEPROM bulk erase and then copying from RAM to EEPROM. However, after adding a protected sector to the EEPROM, I couldn't do a bulk erase anymore, so I used the following sector modify routine. The routine compares each sector with the data in RAM. If they are different, I do a sector modify followed by a word write. It appears that once the program finds a sector that needs changing, it has to change all the following sectors. I haven't checked to see whether the sector modify routine is erasing all the following sectors, or whether when I check the next sector I no longer can read from the EEPROM. LDX #USERS_EESTART ;==$400 LDY #BBRAM1 .PERM2 LDD 0,X ;CHECK IF SECTOR NEEDS REPROGRAMMING CPD 0,Y BNE .PERM3 LDD 2,X CPD 2,Y BEQ .PERM6 .PERM3 MOVB #ESTAT.ACCERR+ESTAT.PVIOL,ESTAT BRCLR ESTAT,#ESTAT.CBEIF,$ JSR WATCHDOG LDD 0,Y STD 0,X MOVB #ECMD.ERASE+ECMD.PROGRAM,ECMD ;SECTOR MODIFY MOVB #ESTAT.CBEIF,ESTAT BRCLR ESTAT,#ESTAT.ACCERR+ESTAT.PVIOL,.PERM4 SWI .PERM4 BRCLR ESTAT,#ESTAT.CBEIF,$ JSR WATCHDOG LDD 2,Y STD 2,X MOVB #ECMD.PROGRAM,ECMD ;PROGRAM SECOND HALF OF SECTOR MOVB #ESTAT.CBEIF,ESTAT BRCLR ESTAT,#ESTAT.ACCERR+ESTAT.PVIOL,.PERM5 SWI .PERM5 BRCLR ESTAT,#ESTAT.CCIF,$ .PERM6 LEAX 4,X LEAY 4,Y CPY #BBRAM4 BLO .PERM2 RTC ----- Original Message ----- From: "Gordon Doughman" <> To: <> Sent: Thursday, November 14, 2002 10:30 AM Subject: Re: [68HC12] EEPROM programming for 9S12A128 > Gianni, > > I have a set of routines that I wrote for the Cosmic compiler. It provides > routines that will allow writing a byte, word or long word to any address > boundary. Essentially the routines allow the small sector Flash to be > treated as byte writeable EEPROM, erasing & (re)writing information as > necessary. I can provide the assembly source but no support. I'm sure it > could be adapted to the icc compiler. Let me know if you're interested. > > Regards, > Gordon > > Gianni wrote: > > > Hello, > > > > I would like to know if anyone has a "C" callable routine to program > > the EEPROM of a 9S12A128 device. > > I'm using ICC12 compiler. > > > > Thank you very much. > > > > > > > > -------------------- > > > > > > > > ">http://docs.yahoo.com/info/terms/ > > -- > =============================================================== > Gordon Doughman Ph: 937-438-6811 > Motorola Semiconductor Fax: 937-434-7457 > Field Applications Engineer Pager: 800-759-8352 Pin: 1304089 > Suite 175 > 3131 Newmark Drive > Miamisburg, OH 45342 > > Check out my HC12 book at: > http://www.rtcgroup.com/books/ > > > -------------------- > > ">http://docs.yahoo.com/info/terms/ >

Yes Gordon, I'm interrested. Let me know how get them. Regards Gianni Golinelli ----- Original Message ----- From: Gordon Doughman To: Sent: Thursday, November 14, 2002 5:30 PM Subject: Re: [68HC12] EEPROM programming for 9S12A128 Gianni, I have a set of routines that I wrote for the Cosmic compiler. It provides routines that will allow writing a byte, word or long word to any address boundary. Essentially the routines allow the small sector Flash to be treated as byte writeable EEPROM, erasing & (re)writing information as necessary. I can provide the assembly source but no support. I'm sure it could be adapted to the icc compiler. Let me know if you're interested. Regards, Gordon Gianni wrote: > Hello, > > I would like to know if anyone has a "C" callable routine to program > the EEPROM of a 9S12A128 device. > I'm using ICC12 compiler. > > Thank you very much. > > -------------------- > > ">http://docs.yahoo.com/info/terms/ -- =============================================================== Gordon Doughman Ph: 937-438-6811 Motorola Semiconductor Fax: 937-434-7457 Field Applications Engineer Pager: 800-759-8352 Pin: 1304089 Suite 175 3131 Newmark Drive Miamisburg, OH 45342 Check out my HC12 book at: http://www.rtcgroup.com/books/ --------------------

Gianni, I have a set of routines that I wrote for the Cosmic compiler. It provides routines that will allow writing a byte, word or long word to any address boundary. Essentially the routines allow the small sector Flash to be treated as byte writeable EEPROM, erasing & (re)writing information as necessary. I can provide the assembly source but no support. I'm sure it could be adapted to the icc compiler. Let me know if you're interested. Regards, Gordon Gianni wrote: > Hello, > > I would like to know if anyone has a "C" callable routine to program > the EEPROM of a 9S12A128 device. > I'm using ICC12 compiler. > > Thank you very much. > > -------------------- > > ">http://docs.yahoo.com/info/terms/ -- =============================================================== Gordon Doughman Ph: 937-438-6811 Motorola Semiconductor Fax: 937-434-7457 Field Applications Engineer Pager: 800-759-8352 Pin: 1304089 Suite 175 3131 Newmark Drive Miamisburg, OH 45342 Check out my HC12 book at: http://www.rtcgroup.com/books/