DosDebug Commands

DosDebug commands

Number	Name	Description
0	DBG_C_Null	Null
1	DBG_C_ReadMem	Read Word
1	DBG_C_ReadMem_I	Read Word
2	DBG_C_ReadMem_D	Read Word (same as 1)
3	DBG_C_ReadReg	Read Register Set
4	DBG_C_WriteMem	Write Word
4	DBG_C_WriteMem_I	Write Word
5	DBG_C_WriteMem_D	Write Word (same as 4)
6	DBG_C_WriteReg	Write Register Set
7	DBG_C_Go	Go
8	DBG_C_Term	Terminate
9	DBG_C_SStep	Single Step
10	DBG_C_Stop	Stop
11	DBG_C_Freeze	Freeze Thread
12	DBG_C_Resume	Resume Thread
13	DBG_C_NumToAddr	Object Number to Address
14	DBG_C_ReadCoRegs	Read Coprocessor Registers
15	DBG_C_WriteCoRegs	Write Coprocessor Registers
16	Reserved	Reserved
17	DBG_C_ThrdStat	Get Thread Status
18	DBG_C_MapROAlias	Map Read-Only Alias
19	DBG_C_MapRWAlias	Map Read-Write Alias
20	DBG_C_UnMapAlias	Unmap Alias
21	DBG_C_Connect	Connect to Debuggee
22	DBG_C_ReadMemBuf	Read Memory Buffer
23	DBG_C_WriteMemBuf	Write Memory Buffer
24	DBG_C_SetWatch	Set Watchpoint
25	DBG_C_ClearWatch	Clear Watchpoint
26	DBG_C_RangeStep	Range Step
27	DBG_C_Continue	Continue
28	DBG_C_AddrToObject	Get Memory Object Information
29	DBG_C_XchngOpcode	Exchange Opcode
30	DBG_C_LinToSel	Translate Linear Address to Segment:Offset
31	DBG_C_SelToLin	Translate Segment:Offset to Linear Address

Not all fields must be defined for every DosDebug command. The same field can have a different meaning in different DosDebug commands. For each command, fields in the Debug Buffer structure that are not listed are not useful for that command, but may be modified by DosDebug as required.