Zaks book error ?

[Rishi]

when i recovered our ZX81 i also looked for the book i bought (on special order) Programming the Z80 by Rodnay Zaks, but i didn't manage to find it back, fortunately it was available online as PDF (also 2nd hand for about $50 + postage and handling, but that was a bit to much, i can buy a Kindle for that ) anyway just now i was looking through it and i should read it again front to back thoroughly, but i was browsing and i noticed on page 95, an Error ? shouldn't the 2nd line of the program read
"LD HL,ADDR2" ? you know it's for my own understanding, if i see these things i know i on the right track, but could someone else have a quick look and confirm this ?
thx up front !!

[PokeMon]

Yes - this should be a bug.

[IanB]

No, it should actually read

LD HL, ADR2

[1024MAK]

From the "third revised edition 1982":

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Mark

[Rishi]

Thanx again, that is clear it is as i thought it was and i do not need to revise my way of thinking...

[Rishi]

ehm Mark do you have a clear copy of page 170 as well, the PDF is just to grainy.

[PokeMon]

You may try this one:
http://www.z80.info/zip/programming_the ... dition.pdf

This file is OCRed as well - you may search for suitable keywords.

[1024MAK]

ehm Mark do you have a clear copy of page 170 as well, the PDF is just to grainy.

Erm, do you mean page 171 with figure 4.10: Rotates and Shifts?

Mark

[1024MAK]

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Page 170

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Page 171

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Page 171, Figure 4.10: Rotates and Shifts

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Trying to take a good picture while holding the book open with one hand and holding an iPad (used to take the photo) in the other without the picture coming out blurred is not easy . Not helped by the figures in the book having small details in the first place...

If these are no good, I will try outside in the sunshine with a proper camera (that has a macro mode) later.

Mark

[Rishi]

No these will do, i usually use my scanner I was making a binary to BCD converter, but got confused by the meaning of of the 'c' in rlc thought it meant carry, but as it turns out means circular, anyway thx, i got it to go already using the debugging functions of the assembler, found where the error was it had to be rl instead of rlc.