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P89C669 user manual page 71 indicate I2CON (91h) is bit addressable.! How can declare to compiler? My custom header file for P89C669 ; sfr I2CON = 0x91; sbit I2EN = I2CON^6; sbit STA = I2CON^5; sbit STO = I2CON^4; sbit SI = I2CON^3; sbit AA = I2CON^2; sbit CRSEL = I2CON^0; When compiled REG669.H(246): error A17: INVALID BASE IN BIT ADDRESS EXPRESSION
P89C669 user manual page 71 indicate I2CON (91h) is bit addressable.! How does it indicate that? Pleas note that just because individual bits in a given SFR have names assigned to them in the documentation, that doesn't mean the SFR itself is bit-addressable. An SFR at address 0x91 quite certainly isn't. So you'll have to construct your own bit mangling routines to use it, like it's done on all those CPUs out there that don't have bit-addressables at all.
All PHILIPS or other micros has bit addressable I2C control register (I2CON) for I2C peripherals. Like P89LPC932, P89C66x and P89C669 !! Maybe this is silicon bug or documentation error.. P89C669 I2C peripheral working with no problem, but I2CON sfr control only posibble byte operators.
All PHILIPS or other micros has bit addressable I2C control register (I2CON) for I2C peripherals. evidently not the 669 Erik
ALl the "Bit Addressable" SFRs are indicated, in the datasheet, with light blue lettering above the bits. There's no error there. The 91H is black and to the left.
"All PHILIPS or other micros has bit addressable I2C control register (I2CON) ... Like ... P89C669" So you say it is bit-addressable... "P89C669 ... I2CON sfr control only posibble byte operators." ... then you say it isn't. It's got to be one or the other! The general consensus seems to that it is not bit-adressable, and the data sheet never said it was?