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Hardware Conflicts Resolution sheet for CPUs
                                      3000, HL, NL
Interrupts   1000 & 1000 SX     1000 SL            1000 TX            1000 TL            4000 & LX

 0           Software Timer     Software Timer     Software Timer     Software Timer     Timer
 1           Keyboard           Keyboard           Keyboard           Keyboard           Keyboard
 2           Unused             Unused             Unused             Unused             Unused
 3           Unused             Unused             COM 2*             Unused             COM 2
 4           Unused             COM 1              COM 1*             COM 1              COM 1
 5           Vertical Sync.     Vertical Sync.     Vert. Sync.*       Vertical Sync.     LPT 2
 6           Floppy Disk        Floppy Disk        Floppy Disk*       Floppy Disk        Floppy Disk
 7           LPT 1              LPT 1              LPT 1*             LPT 1              LPT 1
 8           N A                N A                N A                N A                Real Time Clock
 9           N A                N A                N A                N A                Used by Interrupt 2
10           N A                N A                N A                N A                Unused
11           N A                N A                N A                N A                Unused
12           N A                N A                N A                N A                Unused
13           N A                N A                N A                N A                Co-Processor
14           N A                N A                N A                N A                Hard Disk (16-bit)
15           N A                N A                N A                N A                Unused

DMA          1000 & 1000 SX     1000 SL            1000 TX            1000 TL            3000s & 4000s

 0           Refresh            N A                Refresh            Refresh            Spare
 1           Opt SDLC/FDC 2     Sound Circuit      Opt SDLC/FDC 2     Sound Circuit      Opt SDLC/FDC 2
 2           Floppy Disk 1      Floppy Disk 1      Floppy Disk 1      Floppy Disk 1      Floppy Disk
 3           Optional Hard      Optional Hard      Optional Hard      Optional Hard      Opt Hard Disk (8-bit)
 4           N A                N A                N A                N A                Cascade
 5           N A                N A                N A                N A                Open
 6           N A                N A                N A                N A                Open
 7           N A                N A                N A                N A                Open

I/O Assign   1000 & 1000 SX     1000 SL            1000 TX            1000 TL            3000s & 4000s

0000 000F    DMA Function       DMA Function       DMA Function       DMA Function       DMA 1 Function
0010 001F    Reserved           Reserved           Reserved           Reserved           DMA 1 Function
0020 003F    InterruptControllerInterruptControllerInterruptControllerInterruptControllerInterruptController 1
0040 005F    Timer              Timer              Timer              Timer              Timer
0060 007F    Keyboard           Keyboard           Keyboard           Keyboard           Keyboard
0080 009F    DMA Page Register  DMA Page Register  DMA Page Register  DMA Page Register  DMA Page Register
00A0 00BF    NMI                NMI                NMI                NMI                NMI, INT Controller 2
00C0 00DF    Sound Generation   Sound Generation   Sound Generation   Sound Generation   DMA Controller 2

00E0 00EF    Reserved           Reserved           Reserved           Reserved           Reserved
00F0 00FF    Reserved           Reserved           Reserved           Reserved           Co-Processor
0100 01EF    Reserved           Reserved           Reserved           Reserved           Reserved
01F0 01F8    Reserved           Reserved           Reserved           Reserved           Hard Disk
01F9 01FF    Reserved           Reserved           Reserved           Reserved           Reserved
0200 0207    Joystick           Joystick           Joystick           Joystick           Game Port
0208 0209    Joystick           Joystick           Joystick           Joystick           Reserved
020A 020F    Joystick           Joystick           Joystick           Joystick           Reserved


Hardware Conflicts Resolution Sheet for CPUs (continued)
                   3000, HL, NL,
I/O Assign   1000 & 1000 SX     1000 SL            1000 TX            1000 TL            4000 & LX

0210 0217    Reserved           Reserved           Reserved           Reserved           Reserved
0218 C277    Reserved           Reserved           Reserved           Reserved           Reserved
0278 027F    LPT 2              LPT 2              LPT 2              LPT 2              LPT 2
0280 02F7    Reserved           Reserved           Reserved           Reserved           Reserved
02F8 02FF    COM 2              COM 2              COM 2              COM 2              COM 2
0300 031F    Reserved           Reserved           Reserved           Reserved           Prototype Card
0320 032F    Hard Disk          Hard Disk          Hard Disk          Hard Disk          Unused
0330 036F    Unused             Unused             Unused             Unused             Reserved

0370 037F    LPT 1              LPT 1              LPT 1              LPT 1              LPT 1
0380 038F    Unused             Unused             Unused             Unused             SDLC, BISYNC 2
03A0 03AF    Unused             Unused             Unused             Unused             BISYNC 1
03B0 03BF    Unused             Monochrome Video   Unused             Monochrome Video   Monochrome Video
03C0 03CF    Unused             Unused             Unused             Unused             Reserved
03D0 03DF    Color Video        Color Video        Color Video        Color Video        Color Video
03E0 03E7    Unused             Unused             Unused             Unused             FDC 2
03E8 03EF    Reserved           Reserved           Reserved           Reserved           Reserved

03F0 03F7    FDC 1              FDC 1              FDC 1              FDC 1              FDC 1
03F8 03FF    COM 1              COM 1              COM 1              COM 1              COM 1
0400 FFFF    Not Usable         Not Usable         Not Usable         Not Usable         Not Usable




Hardware Conflicts Resolution Sheet for Upgrade Cards
                  1000, 1000 TX,  3000,   4000
Upgrade Cards                Catalog Interrupts DMA I/O Port Address   SX   SL & TL  HL & NL  & LX

Tandy 1000 Hard Disk Control 25-1007 2          3   320H     C800H    X

Tandy 1000 DynaMouse Control 25-1010 3              2FCH              X     X

1200 Baud PC Modem           25-1013 4 (Com 1)      3F8H              X     X        X        X
   (Range of Options)                3 (Com 2)      2F8H

20 Meg Hard Disk Card        25-1029 2          3   320H     CB000H   X     X        X        X
   (Range of Options)                5              324H     CA000H

Disk Cartridge System        25-3022            3   340-345H          X     X

All Graphics Adapters (Mono)                        3B0-3BFH*B0000H         X        X        X
All Graphics Adapters (Color)                       3D0-3DFH B8000H         X        X        X
EGA/VGA Adapters                     2              3B0-3DFH C0000H

PLLS RS-232 Interface        25-3031                                  X     X        X        X

Dual Port Serial Board       25-4039 4 (Com 1)      3F8H              X              X        X
   (Range of Options)                3 (Com 2)      2F8H
                                     2 (Com 3)      3E8H
                                     5 (Com 4)      2E8H

Tandy 3000 Hard Disk Control 25-4060 ..             1F0H                             X        X
                                                    170H

3Com EtherLink II            26-5501 3          1            300H     X     X        X        X
   (Range of Options)                2-5        1-3          250,280,2A0,2E0,300,310,330,350H

EtherLink                    90-1658 3          1            300H     X     X        X        X
   (Range of Options)                2-5        1-3          0-3F0H

EtherLink Plus               26-5502 3          1            300H     X     X        X        X
   (PC/XT Compatible)                3-7,9      1,3          0-3F0H
   (AT 8-bit Slot)                   3-7,9-10   1,3          0-3F0H
   (AT 16-bit Slot)                  11-12,14-155-7          0-3F0H

TandyLink Network Board      26-5601 2          1   398H              X              X        X
   (Range of Options)                3          3   310-3D8H

Ricoh Scanner                90-xxxx                288-28FH                         X        X

Hitachi CD-ROM Interface     90-2156            3*  300H              X              X        X
   (Range of Options)                               200-360H