As you can see, each of these questions will likely produce two obvious answers. They are YES, and NO. .... You should use one bit .... I am referring to external memory, not internal memory.

who on earth, in his right mind, would use a byte (on a processor with bit access) to save a yes/no.

who on earth, in his right mind, would (on a processor with bit access) save a yes/no bit anywhere but in bit addressable memory.

Yes, I know, if you have 4711 identical structures with bitflags, they can not fit in BDATA, but what the ... is wrong with moving the bitbyte you work on to bdata work on it and move it back.

ANDing and ORing in xdata is very processor/code memory expensive. Now what does using code memory expensive coding to save data storage got to do with a fix for 'running out of code space'

Erik.