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||	FILE:	#0053.PLD
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||	PROJ:	20120601
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||	PART:	G26CV12-#0053
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||
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||	DEV :	GAL26CV12
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||
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|| 	DESC:	MASTER DECODER
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||
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|
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|GAL26CV12
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|
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|| INPUT
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|  1:A9, 2:A10, 3:A11, 4:A12, 5:A13, 6:A14, 8:A15, 9:A16, 10:A17,
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| 11:A18, 12:A19, 13:A20, 14:A21, 15:A22, 16:A23, 17:VMA, 18:RW,
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| 24:HIM, 25:X0E, 26:X1E, 27:XFE, 28:FWE,
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|| OUTPUT
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|  19:FE, 20:CS0, 22:ME, 23:CSF
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|
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| ACTIVE-LOW: FE, CS0, ME, CSF
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|
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|
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| SIGNATURE: "0053L   "
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|
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|| VERSONE DEBUG/LOADER
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|
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|| --------------------------------------------------------
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|| HIM -> MAPPA AREA 00FE00 - 00FFFF IN RAM INVECE CHE IN FLASH
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|| X0E -> ABILITA EXTERN MEMORY (/CX0) IN BANCO 1 AREA 010000 - 011FFF (8K)
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|| X1E -> ABILITA EXTERN MEMORY (/CX1) IN BANCO 1 AREA 012000 - 013FFF (8K)
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|| XFE -> ABILITA FLASH  MEMORY BANCHI F0/F7 AREA F00000 - F7FFFF
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|| FWE -> ABILITA WRITE FLASH MEMORY
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|| --------------------------------------------------------
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||
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|| /FE  -> ABILITA FLASH MEMORY F00000 - F7FFFF (512K)
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|| /ME  -> ABILITA BANCHI RAM DA 4MB (ESCLUSO CSX, BK0)
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||	   BLOCCO F80000 - FFFFFF ABILITATO SE:
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||		HIM = 1 AND XFE = 1 AND RW = 0
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||		HIM = 0 AND RW = 1
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|| /CS0 -> PRIMO BLOCCO 128K IN 00000 - 01FFFF (ESCLUSO IO)
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|| /CSF -> BLOCCO FLASH IN F80000 - FFFFFF (512K)
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||	   READ ONLY IF HIM = 1 AND XFE = 1
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||	   MAPPA 00FE00 - 00FFFF IN F8FE00 - F8FFFF SE HIM=0 E RW=1
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|| --------------------------------------------------------
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||
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|| ABILITAZIONE RAM RANGE 020000 - FFFFFF
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|| B4MH -> BLOCCO 4MB 800000 - BFFFFF
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|  B4MH = (VMA' & A23  & A22' )
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|| B2MH -> BLOCCO 2MB C00000 - DFFFFF
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|  B2MH = (VMA' & A23  & A22  & A21' )
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|| B1MH -> BLOCCO 1MB E00000 - EFFFFF
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|  B1MH = (VMA' & A23  & A22  & A21  & A20' )
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|| B5KA -> BLOCCO 512KB F00000 - F7FFFF (RAM SOLO SE XFE=0)
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|  B5KA = (VMA' & A23  & A22  & A21  & A20  & A19' & XFE')
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|| B5KB -> BLOCCO 512KB F00000 - F7FFFF (RAM SOLO SE XFE=1, FWE=0, RW=0)
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|  B5KB = (VMA' & A23  & A22  & A21  & A20  & A19' & XFE & FWE' & RW')
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|  B6K  = (A23 & A22 & A21 & A20 & A19 & VMA')
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|  B6KR = (B6K & RW)
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|  B6KW = (B6K & HIM' & RW' & FWE)
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|  B6RM = (B6KR # B6KW)
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||
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|| B4ML -> BLOCCO 4MB 400000 - 7FFFFF
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|  B4ML = (VMA' & A23' & A22  )
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|| B2ML -> BLOCCO 2MB 200000 - 3FFFFF
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|  B2ML = (VMA' & A23' & A22' & A21  )
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|| B1ML -> BLOCCO 1MB 100000 - 1FFFFF
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|  B1ML = (VMA' & A23' & A22' & A21' & A20  )
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|| B5KL -> BLOCCO 512KB 080000 - 0FFFFF
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|  B5KL = (VMA' & A23' & A22' & A21' & A20' & A19  )
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||
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|| /ME   -> ABILITAZIONE RAM RANGE 080000 - F7FFFF
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|  MXH = (B4MH # B2MH # B1MH # B5KA # B5KB)
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|  MXL = (B4ML # B2ML # B1ML # B5KL)
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|  ME  = (MXL # MXH # B6RM)
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||
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|| --------------------------------------------------------
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||
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|  BANK0 = (A23' & A22' & A21' & A20' & A19' & A18' & A17' & A16' & VMA')
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|  BANK1 = (A23' & A22' & A21' & A20' & A19' & A18' & A17' & A16  & VMA')
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|| --------------------------------------------------------
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||
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|| B0M -> ABILITAZIONE RAM RANGE 000000 - 00FFFF (BANCO 0)
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||
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|| BLOCCO 32K
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|  RB0 = (BANK0 & A15' )
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|| BLOCCO 16K
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|  RB1 = (BANK0 & A15  & A14' )
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|| BLOCCO 8K
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|  RB2 = (BANK0 & A15  & A14  & A13' )
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|| BLOCCO 4K
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|  RB3 = (BANK0 & A15  & A14  & A13  & A12' )
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|| BLOCCO 2K
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|  RB4 = (BANK0 & A15  & A14  & A13  & A12  & A11' )
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|| BLOCCO 1K
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|  RB5 = (BANK0 & A15  & A14  & A13  & A12  & A11  & A10')
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|| ULTIMO BLOCCO 512B (00FE00 - 00FFFF)
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|  RB7 = (BANK0 & A15  & A14  & A13  & A12  & A11  & A10 & A9)
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|| RB7A -> RANGE 00FE00 - 00FFFF IN RAM SOLO SE HIM=1
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|  RB7A = (RB7 & HIM)
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|| RB7B -> RANGE 00FE00 - 00FFFF IN RAM SOLO SE RW=0
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|  RB7B = (RB7 & RW')
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||
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|  B0M = (RB0 # RB1 # RB2 # RB3 # RB4 # RB5 # RB7A # RB7B)
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|| --------------------------------------------------------
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||
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|| B1M -> ABILITAZIONE RAM RANGE 010000 - 01FFFF (BANCO 1)
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||
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|| B32KH -> BLOCCO 32KB 018000 - 01FFFF
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|  B32KH = (BANK1 & A15)
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|| B16KH -> BLOCCO 16KB 014000 - 017FFF
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|  B16KH = (BANK1 & A15' & A14)
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|| B08KL -> BLOCCO 8KB 010000 - 011FFF
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|  B08KL = (BANK1 & A15' & A14' & A13' & X0E')
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|| B08KH -> BLOCCO 8KB 012000 - 013FFF
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|  B08KH = (BANK1 & A15' & A14' & A13  & X1E')
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||
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|  B1M = (B32KH # B16KH # B08KL # B08KH)
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|| --------------------------------------------------------
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||
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|| /CS0 -> ABILITAZIONE RAM RANGE 000000 - 01FFFF (BANCHI 0 & 1)
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|  CS0 = (B0M # B1M)
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|| --------------------------------------------------------
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||
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|| FS0  -> ABILITA FLASH RANGE F00000 - F7FFFF SOLO SE XFE=1
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|| FS0R -> ABILITA FLASH RANGE F00000 - F7FFFF SOLO LETTURA
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|  FS0R = (A23 & A22 & A21 & A20 & A19' & VMA' & RW  & XFE)
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|| FS0W -> ABILITA FLASH RANGE F00000 - F7FFFF SOLO SCRITTURA (FWE=1)
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|  FS0W = (A23 & A22 & A21 & A20 & A19' & VMA' & RW' & XFE & FWE)
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||
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|| /FE -> ABILITAZIONE FLASH RANGE F00000 - F7FFFF
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|  FE = (FS0R # FS0W)
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|| --------------------------------------------------------
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||
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|| FS1  -> ABILITA FLASH RANGE F80000 - FFFFFF
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|| FS1R -> ABILITA FLASH RANGE F80000 - FFFFFF SOLO LETTURA
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||  FS1R = (A23 & A22 & A21 & A20 & A19 & VMA' & RW & HIM')
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|| FS1W -> ABILITA FLASH RANGE F80000 - FFFFFF SOLO SCRITTURA (FWE=1)
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|  FS1W = (A23 & A22 & A21 & A20 & A19 & VMA' & RW' & FWE & HIM)
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|| FS2R -> MAPPA RANGE 00FE00 - 00FFFF IN F8FE00 - F8FFFF (HIM=0, RW=1)
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|  FS2R = (RB7 & RW & HIM')
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||
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|| /CSF -> ABILITAZIONE FLASH RANGE F80000 - FFFFFF
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|  CSF = (FS2R # FS1W)