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Add logos 2, 3, and 4
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README.md
39
README.md
@ -1035,7 +1035,7 @@ And now for the moment of truth ...
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## Logo Take 2
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For some unknown reason there is actually a complete _second_ logo on disk?!
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For some unknown reason there is actually a complete _second_ copy of the logo on disk!?
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```
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BLOAD GET_LOGO_1
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@ -1045,9 +1045,11 @@ For some unknown reason there is actually a complete _second_ logo on disk?!
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BSAVE GET_LOGO_2,A$1EEE,L$46
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```
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Hmm, why is our logo messed up?
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* ![logo 2](pics/logo_2.png)
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It turns out 4 tracks are mirrored !?!?
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Hmm, why is our logo messed up??
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It turns out 4 tracks are mirrored !?!?!?
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|Track| Description |
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|:---:|:---------------------------:|
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@ -1056,7 +1058,7 @@ It turns out 4 tracks are mirrored !?!?
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| $0A | Mirror of Track $18 @ $3000 |
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| $0B | Mirror of Track $17 @ $2000 |
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This is easy enough to fix:
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This is easy enough to fix, we just need to swap the track load order. :-)
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Boot our `Fanta.Work` disk ...
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@ -1071,6 +1073,8 @@ Boot our `Fanta.Work` disk ...
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You know the drill ... replace Slot 6, Drive 1 with Fantavision,
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and `1EEEG`
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* ![logo](pics/logo.png)
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## Logo Take 3 !
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@ -1084,12 +1088,17 @@ Track $20, Sectors $8 .. $F has yet a _3rd_ copy of the logo! (Bottom 1/4)
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BSAVE GET_LOGO_34,A$1EEE,L$46
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```
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If we compare the original logo on Tracks $17 and $18 we see that:
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* ![logo 3](pics/logos_34.png)
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If we compare the original logo on Tracks $17 and $18 to this third copy
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we find:
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* Track $20, Sector $8 == Track $18, Sector $8 @ $3800
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## Logo Take 4 !!
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And just when you thought it couldn't get any more loopy ...
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Track $21, Sectors $8 ..$F has yet a _4th_ copy of the logo! (Bottom 1/4)
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If we compare the original logo on Tracks $17 and $18 we see that:
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@ -1098,6 +1107,26 @@ If we compare the original logo on Tracks $17 and $18 we see that:
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Are you going loco yet?
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In case you are curious how does Fantavision orignally loads the logo?
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That resides at $BE89:
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```asm
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BE89:AD 52 C0 LDA $C052
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BE8C:AD 57 C0 LDA $C057
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BE8F:AD 50 C0 LDA $C050
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BE92:A9 17 LDA #$17 ; Track $17
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BE94:20 09 B0 JSR RWTS_Seek
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BE97:A9 20 LDA #$20 ; Load $2000 .. $2FFF
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BE99:A0 17 LDY #$17 ; First half of logo on track $17
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BE9B:20 00 B0 JSR RTWS_LoadTrack
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BE9E:A9 30 LDA #$20 ; Load $3000 .. $3FFF
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BEA0:A0 18 LDY #$18 ; Second half of logo on track $18
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BEA2:20 00 B0 JSR RTWS_LoadTrack
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```
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# Boot Tracing Stage 5
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BIN
pics/logo_2.png
Normal file
BIN
pics/logo_2.png
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Binary file not shown.
After Width: | Height: | Size: 377 KiB |
BIN
pics/logos_34.png
Normal file
BIN
pics/logos_34.png
Normal file
Binary file not shown.
After Width: | Height: | Size: 488 KiB |
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