Service Manuals, User Guides, Schematic Diagrams or docs for : apple lisa Lisa_Boot_ROM_Manual_V1.3_Feb84

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Lisa_Boot_ROM_Manual_V1.3_Feb84


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             uSA BOOT RCJv1
                ML\NJAL..


                 'JERSIttt 1.3
                 Rich Castro
               24 February 1984




341-o175-H                        ~LE   a::tRJTER   ~flDENTIAL
This doctnent replaces all previously written versions of the Lisa Boot
ROM ~anual. It discusses the operation of the Lisa ROM contained on the
system CPU board. This ROM contains a variety of diagnostic, setup and
boot rout1nes which are perrormed automatically upon power-up or a L1sa
system. The ve:rious routines are outlined in the order they ere
performed, the RON boot procedures ere discussed, and the operation or
tho IU1 monitor is explained. Also attached are separate appendices
that cover error messaoes output by the RD1, miscellaneous information
saved by the RCJ1 on power-up, interfaces for Ra1 routines use.ble by
external software, details on a special power-cycl1nO mode provided ror
nanuracturing use, and the procedure fOr creatin; a RCI1 "aster tram 1ts
source code t11es~ ".
                         ..
The infOI'1h8t1on contained in this menual corresponds to the latest
release or the Lisa boot ROM, revision H.




LISA EOJT RCI1                     -1-        iPPLE a:tRJTER cx:IiFlDENTI AL
The latest changes made to the boot R01 have been done to correct errors
dealino with the hard disk interrace.

1) The boot fU1 rDI always initializes the hard disk interface reset and
   parity reset lines as inactive outputs prior to atternptin~ any interaction
   with a hard disk. Previously these lines were left initialized as inputs
   which r8sult8d in a "floating" level on each line.
2) The herd disk interface reset routine now works properly for both      Sea~ate
   and Widoet type disk drives. Previously, reset of a Widget drive could
  result in a tigeout error because of its longer delay in responding to a
  reset s1 gnal .

Ninor changes have also been made to this document to correct erroneous
statements and supply new information. These chenges are noted by a vertical
bar in the left hand margin of the changed page.




LISA BCXJT IU1                    -2-       fFPLE CCtRlTER Cll'4F I DENT I AL
1.0    I~I~ .................................................... 4

2.0    STARTUP TESTSIPROCEDURES ........................................ ,
3 .0 B:XlT   ~S.................................................              13
4 .0   tDiIT~    (J)ERATICI'i



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