ViewVC Help
View File | Revision Log | Show Annotations | Revision Graph | Root Listing
root/cebix/Frodo4/Docs/kernal.html
Revision: 1.2
Committed: 2010-04-25T11:52:11Z (13 years, 11 months ago) by cebix
Content type: text/html
Branch: MAIN
CVS Tags: HEAD
Changes since 1.1: +0 -0 lines
State: FILE REMOVED
Log Message:
documentation update

File Contents

# Content
1 <HTML>
2 <HEAD>
3 <TITLE>Kernal extensions</TITLE>
4 </HEAD>
5 <BODY>
6
7 <H1>Extensions of the included Kernal ROM</H1>
8
9 <HR>
10
11 The included "Kernal ROM" has some improvements/changes as compared to
12 an original C64 kernal:
13
14 <UL>
15 <LI>RAM at $fd30-$fd4f is not overwritten during reset
16 <LI>Default device address is 8
17 <LI>Default secondary address is 1
18 <LI>Start and end address are displayed when loading
19 <LI>C= key stops scrolling
20 <LI>Faster key repeat
21 <LI>Tape and RS232 routines removed
22 <LI>Key commands:
23 <UL>
24 <LI>F1 : <KBD>&lt;CLS&gt; LIST &lt;CR&gt;</KBD>
25 <LI>F2 : <KBD>SYS32768 &lt;CR&gt;</KBD>
26 <LI>F3 : <KBD>RUN &lt;CR&gt;</KBD>
27 <LI>F4 : <KBD>SYS4096*12</KBD>
28 <LI>F5 : <KBD>LOAD"</KBD>
29 <LI>F6 : <KBD>SAVE"</KBD>
30 <LI>F7 : <KBD>LOAD"$",8 &lt;CR&gt;</KBD>
31 <LI>F8 : <KBD>CLOSE7:OPEN7,8,15,"</KBD>
32 <LI>SHIFT-Run: <KBD>LOAD":*",8,1:RUN &lt;CR&gt;</KBD>
33 <LI>CTRL-D : Display directory of drive 8
34 <LI>CTRL-K : Read error channel of drive 8
35 <LI>CTRL-L : Load Basic program from RAM disk
36 <LI>CTRL-O : UNNEW
37 <LI>CTRL-U : Modifies the SAVE routine so that the RAM at $a000-$bfff can be <KBD>SAVE</KBD>d
38 <LI>CTRL-V : Swap Basic program with RAM disk
39 <LI>CTRL-W : Save Basic program to RAM disk
40 <LI>CTRL-X : Continue LIST command
41 <LI>CTRL-Z : Continue LIST command 50 lines earlier
42 <LI>CTRL-F1 : Swap screen with buffer 1
43 <LI>CTRL-F3 : Swap screen with buffer 2
44 <LI>CTRL-F5 : Swap screen with buffer 3
45 <LI>CTRL-F7 : Swap screen with buffer 4
46 <LI>CBM-F1 : Write screen to buffer 3
47 <LI>CBM-F3 : Write screen to buffer 4
48 <LI>CBM-F5 : Get screen from buffer 3
49 <LI>CBM-F7 : Get screen from buffer 4
50 </UL>
51 <LI>Startup message shows "BASIC X2"
52 </UL>
53
54 </BODY>
55 </HTML>