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Cleanup disk usage
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Michaelangel007
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README.md
118
README.md
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@ -33,8 +33,8 @@
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* COPY, eh?
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* ProDOS Hybrid!?
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* ProDOS Block Review
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* Disk Usage Details
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* Disk Usage Summary
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* Disk Usage Details
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* Easter Eggs
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* Source Code
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* Original File Names
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@ -2919,6 +2919,9 @@ Block2TrackSector:
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## Disk Usage Summary
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## Disk Usage Details
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| T/S |Addr |Block|Offset|Description |
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|:---:|:---:|----:|-----:|:-----------------------------|
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|T00S0|$0800| 0a | n/a | Boot Stage 1 - Boot Sector |
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@ -3029,126 +3032,19 @@ T15S0 $B000 RWTS
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* $02AA .. $02FF used as disk nibbles decode buffer for $56 bytes
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B000: JMP $B451 ; RWTS_ReadTrack ; Y = Track, A = Addr
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B003: JMP $B3ED ; RWTS_ ; TODO
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B006: JMP $B422 ; RWTS_ ; TODO
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B009: JMP $B0E9 ; RWTS_Seek ; A = Track
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B00C: JMP $B462
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B00F: SEC RTS ; Error
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B051: CMP #$D5
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B05B: CMP #$AA
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B065: CMP #$AD
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B069: Decode #$56 nibbles into $2AA..$2FF
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B0DC: CMP #$DE
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B0E9:
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; Disk Nibbles: Volume, Track, Sector, Checksum
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CHECKSUM = $E1
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HALF_TRACK_PREV = $EC (mirror of $FF)
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HALF_TRACK_WANT = $EB
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HALF_TRACK_HAVE = $FF ; TODO: FIXME: RWTS_HALFTRACK
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HAVE_SECTOR = $E3
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```
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T15S1 $B100 @ $B126:read sector prologue D5 AA 96 [xx yy zz] DE
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```
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B136:CMP #$D5
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B140:CMP #$AA
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B14B:CMP #$96
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B172:CMP #$DE
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Valid Disk Nibbles (6-bit * 4) Lookup Table
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;[+0 +1 +2 +3 +4 +5 +6 +7]
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;[+8 +9 +A +B +C +D +E +F]
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B196: 00 04 ; -- -- -- -- -- -- 96 97
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B198:98 99 08 0C 9C 10 14 18 ; -- -- 9A 9B -- 9D 9E 9F
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B1A0:A0 A1 A2 A3 A4 A5 1C 20 ; -- -- -- -- -- -- A6 A7
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B1A8:A8 A9 AA 24 28 2C 30 34 ; -- -- -- AB AC AD AE AF
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B1B0:B0 B1 38 3C 40 44 48 4C ; -- -- B2 B3 B4 B5 B6 B7
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B1B8:B8 50 54 58 5C 60 64 68 ; -- B9 BA BB BC BD BE BF
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B1C0:C0 C1 C2 C3 C4 C5 C6 C7 ; -- -- -- -- -- -- -- --
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B1C8:C8 C9 CA 6C CC 70 74 78 ; -- -- -- CB -- CD CE CF
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B1D0:D0 D1 D2 7C D4 D5 80 84 ; -- -- -- D3 -- -- D6 D7
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B1D8:D8 88 8C 90 94 98 9C A0 ; -- D9 DA DB DC DD DE DF
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B1E0:E0 E1 E2 E3 E4 A4 A8 AC ; -- -- -- -- -- E5 E6 E7
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B1E8:E8 B0 B4 B8 B8 C0 C4 C8 ; -- E9 EA EB EC ED EE EF
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B1F0:F0 F1 CC D0 D4 D8 DC E0 ; -- -- F2 F3 F4 F5 F6 F7
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B1F8:F8 E4 E8 EC F0 F4 F8 FC ; -- F9 FA FB FC FD FE FF
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T15S2 $B200 Optimized 6&2 Decode Table
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Notes:
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* 4 bytes/nibble
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* 4'th byte not used -- used as padding since X*3 = x*2 + x = too slow
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* Sequence in psuedo-base 4: 0,2,1,3
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B200:00 00 00 96 ; [00]
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B204:02 00 00 97 ; [01]
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B208:01 00 00 9A ; [02]
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B20C:03 00 00 9B ; [03]
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B210:00 02 00 9D ; [04]
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B214:02 02 00 9E ; [05]
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B218:01 02 00 9F ; [06]
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B21C:03 02 00 A6 ; [07]
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B220:00 01 00 A7 ; [08]
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B224:02 01 00 AB ; [09]
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B228:01 01 00 AC ; [0A]
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B22C:03 01 00 AD ; [0B]
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B230:00 03 00 AE ; [0C]
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B234:02 03 00 AF ; [0D]
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B238:01 03 00 B2 ; [0E]
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B23C:03 03 00 B3 ; [0F]
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B240:00 00 02 B4 ; [10]
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B244:02 00 02 B5 ; [11]
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B248:01 00 02 B6 ; [12]
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B24C:03 00 02 B7 ; [13]
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B250:00 02 02 B9 ; [14]
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B254:02 02 02 BA ; [15]
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B258:01 02 02 BB ; [16]
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B25C:03 02 02 BC ; [17]
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B260:00 01 02 BD ; [18]
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B264:02 01 02 BE ; [19]
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B268:01 01 02 BF ; [1A]
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B26C:03 01 02 CB ; [1B]
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B270:00 03 02 CD ; [1C]
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B274:02 03 02 CE ; [1D]
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B278:01 03 02 CF ; [1E]
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B27C:03 03 02 D3 ; [1F]
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B280:00 00 01 D6 ; [20]
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B284:02 00 01 D7 ; [21]
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B288:01 00 01 D9 ; [22]
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B28C:03 00 01 DA ; [23]
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B290:00 02 01 DB ; [24]
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B294:02 02 01 DC ; [25]
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B298:01 02 01 DD ; [26]
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B29C:03 02 01 DE ; [27]
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B2A0:00 01 01 DF ; [28]
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B2A4:02 01 01 E5 ; [29]
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B2A8:01 01 01 E6 ; [2A]
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B2AC:03 01 01 E7 ; [2B]
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B2B0:00 03 01 E9 ; [2C]
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B2B4:02 03 01 EA ; [2D]
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B2B8:01 03 01 EB ; [2E]
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B2BC:03 03 01 EC ; [2F]
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B2C0:00 00 03 ED ; [30]
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B2C4:02 00 03 EE ; [31]
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B2C8:01 00 03 EF ; [32]
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B2CC:03 00 03 F2 ; [33]
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B2D0:00 02 03 F3 ; [34]
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B2D4:02 02 03 F4 ; [35]
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B2D8:01 02 03 F5 ; [36]
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B2DC:03 02 03 F6 ; [37]
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B2E0:00 01 03 F7 ; [38]
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B2E4:02 01 03 F9 ; [39]
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B2E8:01 01 03 FA ; [3A]
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B2EC:03 01 03 FB ; [3B]
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B2F0:00 03 03 FC ; [3C]
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B2F4:02 03 03 FD ; [3D]
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B2F8:01 03 03 FE ; [3E]
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B2FC:03 03 03 FF ; [3F]
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T15S3 $B300
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T15S4 $B400
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T15S5 $B500
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