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Collection of Hack-Phreak Scene Programs
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cleanhpvac.zip
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cleanhpvac
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VGADOC4B.ZIP
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VESALIE.AS
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1995-09-29
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4KB
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233 lines
O EQU OFFSET
SYS EQU INT 021
STOP EQU INT 020
TSR EQU INT 027
;USE PSP FOR DATA
SIGN EQU 0F7 ;Signature 'FTH' (46h,54h,48h)
OLDINT EQU 0FA ;OLD INT 10h VECTOR
VERSION EQU 0FE ;Version Number to force (0102) DEFAULT
MEMORYS EQU 0100 ;Memory size in 64K units (4=256K)
CONTROL EQU 0102 ;CONTROL WORD. BIT FLAGS:
; BIT 0: Disable VESA if set
; 7: Terminate TSR if set
CT_NOVESA EQU 1 ;SET TO DISABLE ANY PREVIOUS VESA DRIVER
CT_NEW EQU 040 ;SET IF NO PREVIOUS "vesalie" INSTALLED
CT_STOP EQU 080 ;SET TO TERMINATE AND UNINSTALL
ORG 0100
JMP START
INT10:
PUSHF
CS TEST B[CONTROL],CT_STOP
JNZ >L7
CMP AH,04F
JNZ >L8
CS TEST B[CONTROL],CT_NOVESA
JNZ >L9
CMP AL,0
JNZ >L8 ;NOW 04F00
CS CALL D[OLDINT] ;FLAGS ALREADY ON STACK
PUSH BP
MOV BP,SP
PUSH AX
LAHF
MOV [BP+6],AH ;CHANGE OLD FLAGS ON STACK
CS MOV AX,[VERSION]
OR AX,AX
IF NE ES MOV [DI+4],AX
CS MOV AX,[MEMORYS]
OR AX,AX
IF NE ES MOV [DI+012],AX
POP AX,BP
IRET
L9: ;KILL ANY VESA QUERIES
POPF
IRET
L8: ;LET SOMEONE ELSE HANDLE THIS
POPF
CS JMP D[OLDINT]
L7: ;TERMINATE
PUSH ES,AX
XOR AX,AX
MOV ES,AX
CS MOV AX,[OLDINT]
ES MOV [040],AX
CS MOV AX,[OLDINT+2]
ES MOV [042],AX
MOV AH,049
MOV ES,CS
SYS
POP AX,ES
POPF
IRET
START:
MOV W[VERSION],0
MOV W[MEMORYS],0
MOV B[CONTROL],0
XOR AX,AX
MOV ES,AX
ES LES DI,[040] ;INT 10h VECTOR
MOV [OLDINT],DI
MOV [OLDINT+2],ES
CMP DI,O INT10
JNZ >L2
ES CMP W[SIGN],05446
JNZ >L2
ES CMP B[SIGN+2],048
JZ >L3
L2:
MOV ES,CS
OR B[CONTROL],CT_NEW
L3:
MOV SI,080
LODSB
MOV AH,0
ADD AX,SI
MOV DI,AX
MOV B[DI],0
L0:
LODSB
OR AL,AL
IF Z JMP PROCESS
CMP AL,'/'
IF NE CMP AL,'-'
JZ >L1
CMP AL,' '
JZ L0
CMP AL,9
JZ L0
CMP AL,0D
JZ L0
JMP USAGE
L1:
LODSB
OR AL,020 ;LOWER CASE
CMP AL,'o'
JNZ >L1
LODSB
OR AL,020
CMP AL,'n'
JNE >L2
ES AND B[CONTROL],NOT CT_NOVESA
JMP L0
L2:
CMP AL,'f'
IF E ES OR B[CONTROL],CT_NOVESA
LODSB
CMP AL,'f'
IF NE CMP AL,'F'
IF NE DEC SI
JMP L0
L1:
CMP AL,'?'
JNZ >l2
USAGE:
MOV AH,9
MOV DX,O USE
SYS
STOP
L2:
CMP AL,'m'
JNZ >L3
MOV BX,0
L22:
LODSB
CMP AL,'0'
JB >L7
CMP AL,'9'
JA >L7
XCHG AX,BX
MOV DX,10
MUL DX
AND BX,0F
ADD BX,AX
JMP L22
L7:
ADD BX,63
MOV CL,6
SHR BX,CL
ES MOV [MEMORYS],BX
JMP L0
L3:
CMP AL,'u'
JNZ >L4
ES OR B[CONTROL],CT_STOP
OR B[CONTROL],CT_STOP
JMP L0
L4:
MOV BX,0
CMP AL,'0'
IF E MOV BX,0100
CMP AL,'1'
IF E MOV BX,0101
CMP AL,'2'
IF E MOV BX,0102
OR BX,BX
JZ USAGE
ES MOV W[VERSION],BX
JMP L0
PROCESS:
TEST B[CONTROL],CT_STOP
JZ >L6
MOV DX,O UNLOAD
MOV AH,9
SYS
STOP
L6:
TEST B[CONTROL],CT_NEW
JNZ >L5
MOV DX,O ALLOK
MOV AH,9
SYS
STOP
L5: ;INSTALL
MOV W[SIGN],05446
MOV B[SIGN+2],'H'
XOR AX,AX
MOV ES,AX
ES MOV W[040],O INT10
ES MOV W[042],CS
MOV ES,[02C] ;Environment
MOV AH,049
SYS
MOV DX,O LOAD
MOV AH,9
SYS
MOV DX,O START
TSR ;GO TSR, KEEP UNTIL START
BUF:
ALLOK:
DB 13,10,'VESALIE: Parameters have been changed.',13,10,'$'
UNLOAD:
DB 13,10,'VESALIE has been uninstalled',13,10,'$'
LOAD:
DB 13,10,'VESALIE has been installed.',13,10,'$'
USE:
DB 13,10,'Usage: VESALIE [/0|/1|/2] [/ON|/OFF] [/Mxx] [/U]',13,10
DB 13,10,'Where /0 /1 /2 selects VESA version 1.00, 1.01 or 1.02'
DB 13,10,' /ON /OFF turns the VESA driver on and off'
DB 13,10,' /Mxx sets the memory size returned by the driver'
DB 13,10,' /U Uninstalls the VESA "Cheat" facility'
DB 13,10,'$'