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View topic - How could i debug

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NeoZeed
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How could i debug
Post Posted: Thu Sep 16, 1999 5:45 am

Hello all,

Well, i've begin to learn the SG1000 Vdp , and it's a little confuse to me (i want to understand all about the table address,and maps and not to reuse people constatation). So is there a way to debug SG1000 vdp code . I would like to use brsms but i get a black screen with my new computer (video=diamond viper 770).

Also , what about the value to define the video mode. I've see (Marat)
Mode 0 : 0x10 = (Screen 1 in msx) _ ??????????????
Mode 1 : 0x00 = (screen 0 in msx) _ OK
Mode 2 : 0x01 = (Screen 2 in msx) _ ??????????????
Mode 3 : 0x08 = (Screen 3 in msx) _ OK bit 3 si set

Why the mode2 is define as 0x01 & mode0=0x10 , i've read that the video mode is define by the video mode bits position (There are , i suppose, define as it , and if i've a debug tools, i'll not bug you anymore with so dump question).

thanks in advance

Pascal

 
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