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Old 08-07-2009, 10:29 PM
philrrtx philrrtx is offline
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Quote:
Originally Posted by TomL_12953 View Post
Ah! So with my 62K RAM, I'd have 62*1024 = 63488 - length of program (45 bytes) = 63443, convert to octal = 173723, reverse bytes = 723 173 mask off upper bit = 323 173

Is this right?

Thanks for your patience!

Tom L
Looks like my 323 was correct, but the second byte should have been 077 instead of 037.

In Tom's case, I get 323 367. You can't mask off the bit; you have to write octal 173723 out in binary, split it into two eight bit bytes, then translate each of those into octal (it's a heck of a lot easier to do in hex, but the spacing of the switches on the Altair makes that more difficult to enter—works nicely on the IMSAI if you have your switch paddles grouped in fours instead of threes).
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