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Date: July 10, 1985 11:21
From: KIM::SALWITZ
To: @SYS$MAIL:JUNK
*** SYSTEM II STUFF *** There is a new DEVT11.LDA file available now. I have changed the downloader to accomidate mmu offsets not equal to 10000 octal. This should come in handy when you use more than 16 pages or when you set up your roms to use smaller page increments. The old ROMS should work fine as long as you only use 10k increments. - Default page select offset is 10000 octal (page 0 select=00000, page 1 select=10000.) However, if you want to use another offset between two consecutive pages you can... The bottom 4 bits of the page select word (address bits 16 thru 19) show the offset /1000. (ie: 1 = 1000, 2 = 2000,...). ex: Output address = 30004000 (hex) (default offset) Download address = 40000 octal MMU page offset = 10000 octal Page 3 (30000 octal) is selected for mmu page 0 Page 4 (40000 octal) is selected for mmu page 1 ex: Output address = 50024000 (hex) (non default offset) Download address = 40000 octal MMU page offset = 2000 octal Page 20. (50000 octal) is selected for mmu page 0 Page 21. (52000 octal) is selected for mmu page 1 enjoy.. jfs
Jul 10, 1985