56 lines
1.7 KiB
HTML
56 lines
1.7 KiB
HTML
<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>
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