Ira Goldklang's TRS-80 Revived Site

TRS-80 Revived Site by Ira Goldklang's is an archive of everything related to the Tandy Radio Shack TRS-80 microcomputer lines. Site contains emulators, programs, manuals, books, patches, games, hints, discussions, questions, forums, and tons more.

TRSDOS v1.2 Zaps

by @ 1:01 pm on November 12, 2009.
[Model I]      [Model III] TRSDOS v1.2 ZAPS (Unofficial)     [Model 4]      [Model 100]


TRSDOS 1.2 Zaps
Bypass the DATE question
      PATCH *0 (ADD=4EB7,FIND=CD1B02,CHG=B72846)
Gives long error messages
      PATCH *4 (ADD=4E29,FIND=20,CHG=18)


TRSDOS 1.2 Zaps In Track/Sector/Byte Format
Fix CLOSE system overlay to allow to be set correctly during copy
     
Location
TT,SS,BB
——–   		 Contents
——–   		 Change To
——–
10,0C,40    05    08
10,0C,5C    05    08
Disable Graphic display on reset
      
Location    Contents    Change To
TT,SS,BB
--------    --------    ---------
00,0D,C2    D0          0D
Allow Debug to access all memory
      
Location    Contents    Change To
TT,SS,BB
--------    --------    ---------
00,0F,DE    56          00
00,10,08    56          00
00,11,75    56          00
List default to ASCII. To list hex type (ASCII=OFF)
      
Location    Contents    Change To
TT,SS,BB
--------    --------    ---------
15,05,71    00,00       FF,FF

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