Editing Apple II Reference Manual (section)

== What is in it ==
* '''Power supply''' (page 92) - Apple's own specification for the switch-mode supply covered by U.S. Patent 4,130,862: input 107-132 VAC or 214-264 VAC (switch selectable); supply voltages +5.0, +11.8, -12.0 and -5.2; full-load output +5 V at 2.5 A, -5 V at 250 mA, +12 V at 1.5 A (about 2.5 A intermittent) and -12 V at 250 mA; 60 W maximum at full load, 79 W intermittent; operating temperature 55 degrees C. Apple published '''no per-rail tolerance band''' anywhere in this manual.
* '''Main board''' - three rows of eight RAM sockets (row C frontmost, then D, then E), six ROM sockets above them, three memory configuration blocks at D1, E1 and F1, and eight peripheral slots numbered 0 to 7.
* '''ROM''' - the 74LS138 at F12 selects the individual ROMs; the ROMs are similar to the 2316 and 2716 but the chip-select polarity differs, so ordinary 2716 EPROMs '''cannot''' be plugged straight into the board. Figure 13 gives the 9316B pinout.
* '''RAM''' - nine supported configurations (4K, 8K, 12K, 16K, 20K, 24K, 32K, 36K and 48K) built from Mostek 4096-family 4K parts or 4116-type 16K parts.
* '''Keyboard''' - MM5740 keyboard decoder ROM, 7404 buffers, a 7400 scan oscillator at keyboard location U4 and a 555 at U3 generating the 10 Hz repeat.
* '''System timing''' - 14.31818 MHz master oscillator, 7.159 MHz, 3.58 MHz colour reference and the 1.023 MHz phase 0 and phase 1 system clocks.

Download: [[:File:Apple II Reference Manual 1979.pdf|Apple II Reference Manual 1979.pdf]]