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driver.cb
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451 lines (310 loc) · 6.41 KB
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START
BASEADDRESS 19
LET *CHIP_SELECT
LET *DATA_BUS
LET *STATUS_BUS
LET A BE 0
LET B BE 256
LET C BE 0
LET D BE 5
#--------------BEGINING OF WRITE TO HD--------------#
*CHIP_SELECT BE 0b0001
#WRITE 1 TO THE SECTOR COUNT REG
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xA
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x1
*STATUS_BUS BE 0b0000
#Execute command
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
#WRITE 1 TO THE SECTOR REG
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xB
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x1
*STATUS_BUS BE 0b0000
#Execute command
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
#WRITE 0 TO THE CYLINDER REGS
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xC
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
#Execute command
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
#WRITE 0 TO THE CYLINDER REGS
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xD
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
#Execute command
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
#WRITE 0xE0 TO DRIVE HEAD REG
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xE
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xE
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
#Execute command
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
#WRITE THE WRITE COMMAND
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xF
*STATUS_BUS BE 0b0000
#Write 2 as D1
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x3
*STATUS_BUS BE 0b0000
#Write 1 as D0
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
#Execute command
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
#--------------BEGINGING OF LOOP--------------#
LOOPWHILE A NOTEQUALS B
#WRITE DATA TO DATA REG
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x8
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xA
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xB
*STATUS_BUS BE 0b0000
#Execute command
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
A BE INCREMENT A
ENDLOOP
#--------------END OF LOOP---------------#
#READ STATUS 5 TIMES
LOOPWHILE C NOTEQUALS D
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xF
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
#Execute command
*STATUS_BUS BE 0b1000
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b1000
*STATUS_BUS BE 0b0000
C BE INCREMENT C
ENDLOOP
#------------------END OF WRITE TO HD---------------#
#--------------BEGINING OF READ FROM HD--------------#
#WRITE 1 TO THE SECTOR COUNT REG
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xA
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x1
*STATUS_BUS BE 0b0000
#Execute command
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
#WRITE 1 TO THE SECTOR REG
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xB
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x1
*STATUS_BUS BE 0b0000
#Execute command
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
#WRITE 0 TO THE CYLINDER REGS
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xC
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
#Execute command
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
#WRITE 0 TO THE CYLINDER REGS
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xD
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
#Execute command
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
#WRITE 0xE0 TO DRIVE HEAD REG
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xE
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xE
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
#Execute command
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
#WRITE THE READ COMMAND
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xF
*STATUS_BUS BE 0b0000
#Write 2 as D1
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x2
*STATUS_BUS BE 0b0000
#Write 1 as D0
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
#Execute command
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
#READ STATUS 5 TIMES
C BE 0
LOOPWHILE C NOTEQUALS D
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xF
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
#Execute command
*STATUS_BUS BE 0b1000
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b1000
*STATUS_BUS BE 0b0000
C BE INCREMENT C
ENDLOOP
#ENSURE THAT IF THIS CODE HAS BEEN RUN PREVIOUSLY,
#THE SELF_MODIFYING LOOP AHEAD IS CORRECTLY INITIALISED
ASM LOD N_[E]
ASM STR STR1[1]
ASM LOD N_[A]
ASM STR STR1[2]
ASM LOD N_[6]
ASM STR STR1[3]
ASM LOD N_[0]
ASM STR STR1[4]
A BE 0
LOOPWHILE A NOTEQUALS B
#READ DATA FROM DATA REG
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x8
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*STATUS_BUS BE 0b0000
#Execute command
*STATUS_BUS BE 0b1000
ASM LOD 2
ASM STR1:
ASM STR 0d60000
*STATUS_BUS BE 0b0000
ASM INC16 STR1[1] INTO STR2[1]
*STATUS_BUS BE 0b1000
ASM LOD 2
ASM STR2:
ASM STR 0d60001
*STATUS_BUS BE 0b0000
ASM INC16 STR2[1] INTO STR1[1]
A BE INCREMENT A
ASM LOD N_[0]
ENDLOOP
#READ STATUS
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0xF
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b0100
*DATA_BUS BE 0x0
*STATUS_BUS BE 0b0000
#Execute command
*STATUS_BUS BE 0b1000
ASM LOD 2
ASM STR 10000
*STATUS_BUS BE 0b0000
*STATUS_BUS BE 0b1000
ASM LOD 2
ASM STR 10001
*STATUS_BUS BE 0b0000
END