[comp.sys.apple] A little problem...

markl@pro-generic.cts.com (Mark Leumanne) (09/22/89)

Network Comment: to #5285 by claris!jazzman@apple.com

        Hello all programmers out there.  I'm afraid I need a little help to a
little project I'm making.  What I need, is help on making MY OWN Double Hires
viewer, all I need to know though, is what 'switches to switch' to actually
show the picture.  The program is in assembly.  Please leave me mail as to any
help you can offer me.  Thank-you very much.


  ==========::Mark::Leumanne::============  ======::Toronto::Ontario::=====  
 =                                        ==                               = 
 = UUCP: crash!pro-generic!markl          ==       "Apple ][ forever."     = 
 = ARPA: crash!pro-generic!markl@nosc.mil ==       "Beatles forever."      = 
 = INET: markl@pro-generic.cts.com        ==       "Networking forever."   = 
 =                                        ==                               = 
  ========================================  ===============================  
 = CD 61 72 6B : CC 65 75 6D 61 6E 6E 65 : CC 6F 76 65 73 : C1 D0 D0 CC C5 =
  =========================================================================

reeder@reed.UUCP (Doug Reeder) (09/28/89)

STA $C00D ;80COL ON
STA $C001 ;80STORE ON
STA $C054 ;PAGE2 OFF
STA $C050 ;TEXT  OFF
STA $C052 ;MIXED OFF
STA $C057 ;HIRES ON
STA $C05E ;DHIRES ON

to write to aux. memery now:
STA $C055 ;PAGE2 ON
to write to main memory:
STA $CO54 ;PAGE2 OFF

Note that output firmware will not function properly in this mode.
-- 
Doug Reeder                         USENET: ...!tektronix!reed!reeder
Institute of Knowledge, Jinx        BITNET: reeder@reed.BITNET
"A blaster can point two ways."  from ARPA: tektronix!reed!reeder@berkeley.EDU
       -Salvor Hardin               Box 722 Reed College,Portland,OR 97202