home *** CD-ROM | disk | FTP | other *** search
/ NetNews Usenet Archive 1992 #31 / NN_1992_31.iso / spool / comp / sys / amiga / hardware / 22073 < prev    next >
Encoding:
Internet Message Format  |  1992-12-26  |  3.0 KB
  1. Path: sparky!uunet!spool.mu.edu!umn.edu!noc.msc.net!uc.msc.edu!shamash!app
  2. From: app@shamash.cdc.com (CDII Advanced Pkg/Processes)
  3. Newsgroups: comp.sys.amiga.hardware
  4. Subject: Re: Boot up Colors
  5. Message-ID: <50852@shamash.cdc.com>
  6. Date: 26 Dec 92 04:51:19 GMT
  7. References: <1992Dec24.224016.12146@ncsu.edu>
  8. Organization: Control Data Corporation, Arden Hills, MN
  9. Lines: 51
  10.  
  11. In article <1992Dec24.224016.12146@ncsu.edu> cjmcgee1@eos.ncsu.edu (CHRISTOPHER JOHN MCGEE) writes:
  12. >I need to know what the Colors that are displayed on booting up the Amiga
  13. >represent, especially yellow.  I boot up the machine and I keep getting a
  14. >yellow screen.  I am using ADOS 1.3 if that matters.  Any help would be 
  15. >aprecciated.
  16. >
  17. >
  18. >Christopher John McGee
  19. >cjmcgee1@eos.ncsu.edu
  20.  
  21. Dark gray            Ok Hardware                                             
  22. Light gray           Ok Software                                             
  23. Red                  Bad ROM Checksum                                        
  24. Green                Bad RAM                                                 
  25. Blue                 Bad Custom Chips                                        
  26. Yellow               Exception                                               
  27.                                                                              
  28. (INITIALIZATION FROM OS ROMS)                                                
  29. Clear Chips                                                                  
  30. Disable DMA and Interrupts                                                   
  31. Clear the Screen                                                             
  32. Check the Hardware                                                           
  33. Pass or fail the Hardware to the Screen  (BLUE|BAD) (DarkGray|OK)
  34. Checksum the ROMs                           
  35. Pass or fail the ROMs to the Screen    (RED|BAD) (LightGray|OK)
  36. System setup (..is finished)           
  37.  
  38. Check the RAM at $C00000                                                  
  39. Move SYS_BASE to $C00000 if it exists                                     
  40. RAM Test ; hummm.... not very good though needs to indicate hex location  
  41. Pass or fail the RAM to the Screen (LED Blinks 9short 1long | GREEN | BAD)
  42. Check the Software                                                        
  43. Pass or fail the Software to the Screen  (Yellow|BAD) (LightGray|OK)      
  44. Set up the RAM                                                            
  45. Link the Libraries                                                        
  46. Find External RAM and link it to the list                                 
  47. Set up Interrupts and DMA (for boot drive especially)                     
  48. Start default Task                                                        
  49. Check for 68010, 68020, and 68881                                         
  50. Check for an Exception (System Alert?)                                    
  51. System Reset (..Let the good times roll!)
  52.  
  53. note:
  54.  
  55. I saved this from a earlier posting, Don't know how valid it is
  56.  
  57. Hope it helps.
  58.  
  59. Mike Lundberg
  60.  
  61.  
  62.