mirror of
https://github.com/callapple/LLUCE.git
synced 2025-01-14 21:29:48 +00:00
147 lines
5.3 KiB
ArmAsm
147 lines
5.3 KiB
ArmAsm
|
*=================================================
|
||
|
|
* ZOO (MS-DOS)
|
||
|
|
*=================================================
|
||
|
|
* FILE FORMAT
|
||
|
|
*-------------------------------------------------
|
||
|
|
*
|
||
|
|
* Master Header
|
||
|
|
* File 1 Header
|
||
|
|
* File 1
|
||
|
|
* File 2 Header
|
||
|
|
* File 2
|
||
|
|
* .
|
||
|
|
* .
|
||
|
|
* File N Header
|
||
|
|
* File N
|
||
|
|
* EOF
|
||
|
|
*
|
||
|
|
*-------------------------------------------------
|
||
|
|
* MASTER HEADER
|
||
|
|
*-------------------------------------------------
|
||
|
|
*
|
||
|
|
DUM HDRBUF
|
||
|
|
ZOO_VER DS 20 ; ZOO Version Number
|
||
|
|
HEX DCA7C4FD ; File Signature
|
||
|
|
ZOO_FHDR ADRL 0 ; Pointer To 1St Header
|
||
|
|
ADRL 0 ; ?
|
||
|
|
DB 0 ; Version Making Archive
|
||
|
|
DB 0 ; Minimum Version Needed To Extract
|
||
|
|
; 34 Bytes
|
||
|
|
*
|
||
|
|
*-------------------------------------------------
|
||
|
|
* FILE HEADER
|
||
|
|
*-------------------------------------------------
|
||
|
|
*
|
||
|
|
ZOO_ID2 HEX DCA7C4FD ; Signature
|
||
|
|
DB 0 ; ?
|
||
|
|
ZOO_MTHD DB 0 ; Compression Method
|
||
|
|
*
|
||
|
|
* ZOO_MTHD 0 Stored No Compression Used
|
||
|
|
* 1 Crunched Packing, LZW, 4K Buffer
|
||
|
|
* Variable Length (9-12 Bits)
|
||
|
|
*
|
||
|
|
ZOO_NHDR ADRL 0 ; Nxt Hdr Ofst Frm Start Of ZOO File
|
||
|
|
ZOO_THDR ADRL 0 ; Offset Of This Hdr
|
||
|
|
ZOO_MDAT DW 0 ; Last Mod File Date (MS-DOS)
|
||
|
|
ZOO_MTIM DW 0 ; Last Mod File Time (MS-DOS)
|
||
|
|
DW 0 ; CRC-16
|
||
|
|
ZOO_OSIZ ADRL 0 ; Uncompressed Size
|
||
|
|
ZOO_NSIZ ADRL 0 ; Compressed Size
|
||
|
|
DW 0 ; Version That Made This File
|
||
|
|
DW 0 ; Minimum Version Needed To Extract
|
||
|
|
ZOO_DEL DB 0 ; 1 If File Deleted From Archive
|
||
|
|
ADRL 0 ; Pointer To Comment, 0 If None
|
||
|
|
DB 0 ; Length Of Comment
|
||
|
|
ZOO_FNAM DS 13 ; Filename
|
||
|
|
DEND ; 50 Bytes
|
||
|
|
*
|
||
|
|
*-------------------------------------------------
|
||
|
|
* POSITIONING IN FILE
|
||
|
|
*-------------------------------------------------
|
||
|
|
*
|
||
|
|
* Beginning Of 1St File Header = Begining Of File + ZOO_FHDR
|
||
|
|
* Or
|
||
|
|
* = Begining Of File + 34
|
||
|
|
*
|
||
|
|
* Begining Of File Data = Begining Of File Header + 50
|
||
|
|
*
|
||
|
|
* Begining Of Next File = Begining Of File + ZOO_NHDR
|
||
|
|
*
|
||
|
|
* Begining Of File Comment = Begining Of File Header + ZOO_CPNT
|
||
|
|
*
|
||
|
|
DO_ZOO LDX #0 ; Print ZOO Header
|
||
|
|
:PRTZOO LDA ZOO_VER,X
|
||
|
|
CMP #' '
|
||
|
|
BLT :DONE
|
||
|
|
JSR COUT
|
||
|
|
INX
|
||
|
|
CPX #20
|
||
|
|
BNE :PRTZOO
|
||
|
|
|
||
|
|
:DONE MSDOS 1 ; Print List Header
|
||
|
|
PUTMARK ZOO_FHDR ; Set Mark To First File Hdr
|
||
|
|
:ZOOLOOP READ #50;ZOO_ID2 ; Read File Header
|
||
|
|
LDA ZOO_DEL ; Was It Deleted?
|
||
|
|
BNE :SKIPENT ; Yes, Skip It
|
||
|
|
|
||
|
|
LDX #3 ; Check For Valid Entry
|
||
|
|
:TESTID LDA :HDRID,X
|
||
|
|
CMP ZOO_ID2,X
|
||
|
|
BNE :ZOODONE
|
||
|
|
DEX
|
||
|
|
BPL :TESTID
|
||
|
|
|
||
|
|
LDA #0 ; Check For Data In Record
|
||
|
|
LDX #3
|
||
|
|
:TESTENT ORA ZOO_THDR,X
|
||
|
|
DEX
|
||
|
|
BPL :TESTENT
|
||
|
|
|
||
|
|
CMP #0 ; Any Data?
|
||
|
|
BEQ :ZOODONE ; Nope
|
||
|
|
|
||
|
|
JSR :SHOWENT
|
||
|
|
|
||
|
|
:SKIPENT BIT INTOUT
|
||
|
|
BMI :ZOODONE
|
||
|
|
|
||
|
|
LDA ZOO_NHDR ; Any More Records?
|
||
|
|
ORA ZOO_NHDR+1
|
||
|
|
ORA ZOO_NHDR+2
|
||
|
|
BEQ :ZOODONE ; Nope, Done
|
||
|
|
|
||
|
|
PUTMARK ZOO_NHDR ; Point To Next Header
|
||
|
|
JMP :ZOOLOOP ; Do Another
|
||
|
|
|
||
|
|
:ZOODONE RTS
|
||
|
|
|
||
|
|
:SHOWENT SPACE ; No Attribute Byte
|
||
|
|
; Print File Name
|
||
|
|
CSTRING #0;ZOO_FNAM
|
||
|
|
MDATE ZOO_MDAT ; Print Date
|
||
|
|
MTIME ZOO_MTIM ; Print Time
|
||
|
|
; Print Uncompressed Size
|
||
|
|
DECOUT 8;LONG;ZOO_OSIZ
|
||
|
|
TWOSPACE
|
||
|
|
LDA ZOO_MTHD ; Print Compression Method
|
||
|
|
CMP #1+1 ; Valid method?
|
||
|
|
BLT :METHOK ; Yes
|
||
|
|
|
||
|
|
LDA #2 ; Make it unknown
|
||
|
|
:METHOK ASL
|
||
|
|
TAY
|
||
|
|
LDX :METHODS,Y
|
||
|
|
LDA :METHODS+1,Y
|
||
|
|
JSR PRINTFMT
|
||
|
|
; Print Compression Percentage
|
||
|
|
PERCENT LONG;ZOO_NSIZ;LONG;ZOO_OSIZ
|
||
|
|
CROUT ; Next Line
|
||
|
|
RTS
|
||
|
|
|
||
|
|
:METHODS DA STORE
|
||
|
|
DA CRUNCH
|
||
|
|
DA UNK
|
||
|
|
|
||
|
|
:HDRID HEX DCA7C4FD
|
||
|
|
|