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Trap
Registered: Jul 2010
Posts: 223 |
Turning off character ROM
So, it's me again :)
I vaguely remember there's something about the VIC only being able to see the characterset ROM at $9000. For example if I bank switch to $8000-$BFFF and turn on bitmap at $8000, then I see the characterset even though I turned everything off ($01=#$35). Now, my question is - can I somehow turn that off or do I need to put my bitmap somewhere else? (would it be sufficient to move it to the other half of the bank ($A000-$BFFF)?
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Trap |
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Tao
Registered: Aug 2002
Posts: 115 |
There is no way to disable the character ROM, sorry. You can move it to the other half of the bank, or to another bank. |
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Flavioweb
Registered: Nov 2011
Posts: 463 |
Setting $01 affects only CPU. Vic see anyway ram with charset rom fixed at $1000 and $8000. |
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lft
Registered: Jul 2007
Posts: 369 |
To clarify Tao's response: It is your bitmap that can be moved to the other half. Character ROM stays in place always. |
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chatGPZ
Registered: Dec 2001
Posts: 11386 |
and to add some smartassing too: there is a way to disable it of course - switch to ultimax mode :) |
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JackAsser
Registered: Jun 2002
Posts: 2014 |
Quote: and to add some smartassing too: there is a way to disable it of course - switch to ultimax mode :)
Which is only possible using a cart. </smartass> |
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chatGPZ
Registered: Dec 2001
Posts: 11386 |
technically, all you need is a wire =D |
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JackAsser
Registered: Jun 2002
Posts: 2014 |
MacGuyver only needs a paperclip (pun not intended). |
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Flavioweb
Registered: Nov 2011
Posts: 463 |
I ask for a jpg of Gpz putting a swiss-knife in the expansion port... |
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Oswald
Registered: Apr 2002
Posts: 5094 |
I've been routinely using a fork, before knowing you could reset with a card or a button... |
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Tao
Registered: Aug 2002
Posts: 115 |
Quote: technically, all you need is a wire =D
Or you could do what one of my younger brothers did to my 64 -- connect the ground cable from the C2N to the expansion port, thus blowing the fuse and messing up one of the VIA-chips (that 64 -- now retired -- randomly inserted joystick #2 up events, thus making it rather difficult to play some games -- Tetris being extremely annoying, for instance, where up = pause). |
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Smasher
Registered: Feb 2003
Posts: 520 |
Quote: Or you could do what one of my younger brothers did to my 64 -- connect the ground cable from the C2N to the expansion port, thus blowing the fuse and messing up one of the VIA-chips (that 64 -- now retired -- randomly inserted joystick #2 up events, thus making it rather difficult to play some games -- Tetris being extremely annoying, for instance, where up = pause).
youtube or it didn't happen! :) |
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Frantic
Registered: Mar 2003
Posts: 1648 |
All you need is a nerd like Gpz or Jackasser. |
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Trap
Registered: Jul 2010
Posts: 223 |
Thanks guys. Appreciate your help.
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Trap |
