In a message dated 6/1/2005 5:57:21 A.M. Central Daylight Time, [EMAIL PROTECTED] writes:
>There is no such thing as a fake residual count, What would you call a value calculated from the BLKSIZE and the count area and plugged into the CSW field of an IOB? That sure sounds like a fake residual length to me. You're the one with all the documentation that you trust after verifying. I hope you'll let me stop guessing and tell me what IBM's books call it. I would call it a "block size", since it is the size of the block. OTOH, the PoOps gives a precise definition of "residual count", which has meaning for all device types and not just DASD, which has "blocks" of data, a concept not relevant for some other device types. When a 2-byte number from whatever source is moved into the field DCBBLKSI, what should we call it then? Fake block size? >I, on the other hand, have been looking at the CCW chains in SAM >for decades. Then why weren't you aware that they make heavy use of Read Count? I explained that, but you weren't paying attention. I said I had forgotten. I don't always remember everything forever once I become aware of it. >The GTF showed only one Read Data CCW and at least one Read Count >CCW in each chain generated by a READ macro. That makes more than one read CCW. Now use a high value for DCBNCP and issue multiple READ macros before you do a CHECK and observe what happens. I'm sorry, but further experiments are not very interesting, now that I know what my main mistake(s) was(were). It appears that you already know what happens. Perhaps you could simply reveal the answer, along with my requested explanation for why you did not use the secret words "Read Data CCW" much earlier, which would have short-circuited most of these posts. That was, after all, my main point in my last email. In fact, I even put it in the subject line so you would be sure to see it. Weren't you paying attention? Bill Fairchild ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
