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<HTML> |
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<HEAD> |
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<TITLE>Kernal extensions</TITLE> |
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</HEAD> |
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<BODY> |
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<H1>Extensions of the included Kernal ROM</H1> |
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<HR> |
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The included "Kernal ROM" has some improvements/changes as compared to |
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an original C64 kernal: |
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<UL> |
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<LI>RAM at $fd30-$fd4f is not overwritten during reset |
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<LI>Default device address is 8 |
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<LI>Default secondary address is 1 |
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<LI>Start and end address are displayed when loading |
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<LI>C= key stops scrolling |
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<LI>Faster key repeat |
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<LI>Tape and RS232 routines removed |
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<LI>Key commands: |
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<UL> |
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<LI>F1 : <KBD><CLS> LIST <CR></KBD> |
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<LI>F2 : <KBD>SYS32768 <CR></KBD> |
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<LI>F3 : <KBD>RUN <CR></KBD> |
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<LI>F4 : <KBD>SYS4096*12</KBD> |
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<LI>F5 : <KBD>LOAD"</KBD> |
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<LI>F6 : <KBD>SAVE"</KBD> |
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<LI>F7 : <KBD>LOAD"$",8 <CR></KBD> |
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<LI>F8 : <KBD>CLOSE7:OPEN7,8,15,"</KBD> |
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<LI>SHIFT-Run: <KBD>LOAD":*",8,1:RUN <CR></KBD> |
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<LI>CTRL-D : Display directory of drive 8 |
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<LI>CTRL-K : Read error channel of drive 8 |
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<LI>CTRL-L : Load Basic program from RAM disk |
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<LI>CTRL-O : UNNEW |
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<LI>CTRL-U : Modifies the SAVE routine so that the RAM at $a000-$bfff can be <KBD>SAVE</KBD>d |
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<LI>CTRL-V : Swap Basic program with RAM disk |
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<LI>CTRL-W : Save Basic program to RAM disk |
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<LI>CTRL-X : Continue LIST command |
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<LI>CTRL-Z : Continue LIST command 50 lines earlier |
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<LI>CTRL-F1 : Swap screen with buffer 1 |
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<LI>CTRL-F3 : Swap screen with buffer 2 |
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<LI>CTRL-F5 : Swap screen with buffer 3 |
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<LI>CTRL-F7 : Swap screen with buffer 4 |
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<LI>CBM-F1 : Write screen to buffer 3 |
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<LI>CBM-F3 : Write screen to buffer 4 |
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<LI>CBM-F5 : Get screen from buffer 3 |
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<LI>CBM-F7 : Get screen from buffer 4 |
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</UL> |
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<LI>Startup message shows "BASIC X2" |
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</UL> |
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</BODY> |
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</HTML> |
