Ira Goldklang's TRS-80 Revived Site

TRSDOS v1.3 ZAPS

       



         Index
ZAP#    Description
01Fast Boot - Remove Banner
02Fast Boot - Remove Time and Date Question
03Stop Zeroing of Memory on Boot
04Shorten "Operation Aborted" Error to "Aborted"
05Change "TRSDOS READY" to "Zapped TRSDOS READY"
06Allow Debug to Access All Memory Locations
07Allow a Full Error Message Instead of Codes

         ******** ZAP 01 ********
Speed up the boot process by removing the initial banner display.
This ZAP modifies OVERLAY 0
DISK LOCATION      (RAM ADDRESS)    FROM          TO
(Trk,Sect,Byte)

00,0B,40           (4E88)           CD,1B,02      00,00,00
00,0B,4C           (4E9A)           CD,1B,02      00,00,00
00,0B,52           (4E9A)           CD,1B,02      00,00,00
      

         ******** ZAP 02 ********
Speed up the boot process by removing the time and date inquiry.
This ZAP modifies OVERLAY 0
DISK LOCATION      (RAM ADDRESS)    FROM          TO
(Trk,Sect,Byte)

00,0B,61           (4E9A)           CA            C3
      

         ******** ZAP 03 ********
Stop the automatic zeroing of memory at reboot.
This ZAP modifies OVERLAY 1
DISK LOCATION      (RAM ADDRESS)    FROM          TO
(Trk,Sect,Byte)

10,00,77           (4E73)           ED,B0         00,00
      

         ******** ZAP 04 ********
Shorten the 'Operation Aborted' Message to 'Aborted'.
This will lengthen the DOS READY Prompt Space to 22 spaces.
This ZAP modifies OVERLAY 1
DISK LOCATION      (RAM ADDRESS)    FROM          TO
(Trk,Sect,Byte)

10,00,2D           (4E30)           A9            B3
      

         ******** ZAP 05 ********
Change the DOS READY prompt from "TRSDOS Ready" to "Zapped TRSDOS Ready".
There is a carriage return "0D" to marke the end of the message
This ZAP modifies OVERLAY 1
DISK LOCATION      (RAM ADDRESS)    FROM          TO
(Trk,Sect,Byte)

10,02,AB           (509B)           STRING        NEW STRING+0D
      

         ******** ZAP 06 ********
Allow DEBUG To Access All Memory Locations. This ZAP modifies OVERLAY 5
DISK LOCATION      (RAM ADDRESS)    FROM          TO
(Trk,Sect,Byte)

00,0F,DE           (4ED9)           56            00
00,10,08           (4EFF)           56            00
00,11,75           (5068)           56            00
      

         ******** ZAP 07 ********
Allow a Full Error Message to be Printed Instead of a Short "ERROR XX" Code Message.
This ZAP modifies OVERLAY 4
DISK LOCATION      (RAM ADDRESS)    FROM          TO
(Trk,Sect,Byte)

00,0F,2C           (4E28)           20            18
      

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