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|| FILE: #0053X.PLD|| PROJ: 20120601|| PART: G26CV12-#0053|||| DEV : GAL26CV12|||| DESC: MASTER DECODER - NEW BUS BOARD||||GAL26CV12||| INPUT| 1:A9, 2:A10, 3:A11, 4:A12, 5:A13, 6:A14, 8:A15, 9:A16, 10:A17,| 11:A18, 12:A19, 13:A20, 14:A21, 15:A22, 16:A23, 17:VMA, 18:RW,| 24:HIM, 25:X0E, 26:X1E, 27:XFE, 28:FWE,|| OUTPUT| 19:FE, 20:CS0, 22:ME, 23:CSF|| ACTIVE-LOW: FE, ME, CSF||| SIGNATURE: "0053X "||| NEW VERSION||| --------------------------------------------------------|| HIM -> MAPPA AREA 00FE00 - 00FFFF IN RAM INVECE CHE IN FLASH|| X0E -> ABILITA EXTERN MEMORY (/CX0) IN BANCO 1 AREA 010000 - 011FFF (8K)|| X1E -> ABILITA EXTERN MEMORY (/CX1) IN BANCO 1 AREA 012000 - 013FFF (8K)|| XFE -> ABILITA FLASH MEMORY BANCHI F0/F7 AREA F00000 - F7FFFF|| FWE -> ABILITA WRITE FLASH MEMORY|| --------------------------------------------------------|||| /FE -> ABILITA FLASH MEMORY F00000 - F7FFFF (512K)|| /ME -> ABILITA BANCHI RAM DA 4MB (ESCLUSO CSX, BK0)|| BLOCCO F80000 - FFFFFF ABILITATO SE:|| HIM = 1 AND XFE = 1 AND RW = 0|| HIM = 0 AND RW = 1|| /CS0 -> PRIMO BLOCCO 128K IN 00000 - 01FFFF (ESCLUSO IO)|| /CSF -> BLOCCO FLASH IN F80000 - FFFFFF (512K)|| READ ONLY IF HIM = 1 AND XFE = 1|| MAPPA 00FE00 - 00FFFF IN F8FE00 - F8FFFF SE HIM=0 E RW=1|| --------------------------------------------------------|| FIRST 128K||| BANK0 = (A23' & A22' & A21' & A20' & A19' & A18' & A17' & A16' & VMA')| BANK1 = (A23' & A22' & A21' & A20' & A19' & A18' & A17' & A16 & VMA')|| --------------------------------------------------------|||| B0M -> ABILITAZIONE RAM RANGE 000000 - 00FFFF (BANCO 0)|||| BLOCCO 32K| RB0 = (BANK0 & A15' )|| BLOCCO 16K| RB1 = (BANK0 & A15 & A14' )|| BLOCCO 8K| RB2 = (BANK0 & A15 & A14 & A13' )|| BLOCCO 4K| RB3 = (BANK0 & A15 & A14 & A13 & A12' )|| BLOCCO 2K| RB4 = (BANK0 & A15 & A14 & A13 & A12 & A11' )|| BLOCCO 1K| RB5 = (BANK0 & A15 & A14 & A13 & A12 & A11 & A10')|| ULTIMO BLOCCO 512B (00FE00 - 00FFFF)| RB7 = (BANK0 & A15 & A14 & A13 & A12 & A11 & A10 & A9)|| RB7A -> RANGE 00FE00 - 00FFFF IN RAM SOLO SE HIM=1| RB7A = (RB7 & HIM)|| RB7B -> RANGE 00FE00 - 00FFFF IN RAM SOLO SE RW=0| RB7B = (RB7 & RW')||| B0M = (RB0 # RB1 # RB2 # RB3 # RB4 # RB5 # RB7A # RB7B)|| --------------------------------------------------------|||| B1M -> ABILITAZIONE RAM RANGE 010000 - 01FFFF (BANCO 1)|||| B32KH -> BLOCCO 32KB 018000 - 01FFFF| B32KH = (BANK1 & A15)|| B16KH -> BLOCCO 16KB 014000 - 017FFF| B16KH = (BANK1 & A15' & A14)|| B08KL -> BLOCCO 8KB 010000 - 011FFF| B08KL = (BANK1 & A15' & A14' & A13' & X0E')|| B08KH -> BLOCCO 8KB 012000 - 013FFF| B08KH = (BANK1 & A15' & A14' & A13 & X1E')||| B1M = (B32KH # B16KH # B08KL # B08KH)|| --------------------------------------------------------|||| CS0 -> ABILITAZIONE RAM RANGE 000000 - 01FFFF (BANCHI 0 & 1)| CS0 = (B0M # B1M)|| --------------------------------------------------------|| CS1 -> BANCO 2 & 3 - AREA 020000 - 03FFFF (128K)| CS1 = (A23' & A22' & A21' & A20' & A19' & A18' & A17 & VMA')|| CS2 -> BANCO 4,5,6 & 7 - AREA 040000 - 07FFFF (256K)| CS2 = (A23' & A22' & A21' & A20' & A19' & A18 & VMA')|| --------------------------------------------------------|||| ABILITAZIONE RAM RANGE 020000 - FFFFFF|| B4MH -> BLOCCO 4MB 800000 - BFFFFF| B4MH = (VMA' & A23 & A22' )|| B2MH -> BLOCCO 2MB C00000 - DFFFFF| B2MH = (VMA' & A23 & A22 & A21' )|| B1MH -> BLOCCO 1MB E00000 - EFFFFF| B1MH = (VMA' & A23 & A22 & A21 & A20' )|| B5K -> BLOCCO 512KB F00000 - F7FFFF (RAM SOLO SE XFE=0, HIM=1)| B5K = (VMA' & A23 & A22 & A21 & A20 & A19' & XFE' & HIM)|| B6K -> BLOCCO 512KB F80000 - FFFFFF ALWAYS MAPPED| B6K = (A23 & A22 & A21 & A20 & A19 & VMA')|||| B4ML -> BLOCCO 4MB 400000 - 7FFFFF| B4ML = (VMA' & A23' & A22 )|| B2ML -> BLOCCO 2MB 200000 - 3FFFFF| B2ML = (VMA' & A23' & A22' & A21 )|| B1ML -> BLOCCO 1MB 100000 - 1FFFFF| B1ML = (VMA' & A23' & A22' & A21' & A20 )|| B5KL -> BLOCCO 512KB 080000 - 0FFFFF| B5KL = (VMA' & A23' & A22' & A21' & A20' & A19 )|||| /ME -> ABILITAZIONE RAM RANGE 000000 - F7FFFF| MXH = (B4MH # B2MH # B1MH # B5K # B6K)| MXL = (B4ML # B2ML # B1ML # B5KL # CS0 # CS1 # CS2)| ME = (MXL # MXH)|||| --------------------------------------------------------|| /FE -> ABILITA FLASH RANGE F00000 - F7FFFF|||| FS1R -> MAPPA RANGE 00FE00 - 00FFFF IN FLASH (HIM=0, RW=1) - BOOT| FS1R = (RB7 & RW & HIM')|| FS2 -> ABILITA FLASH RANGE F00000 - F7FFFF (XFE=1, FWE=1)| FS2 = (A23 & A22 & A21 & A20 & A19' & VMA' & FWE & XFE)| FE = (FS1R # FS2)|| --------------------------------------------------------|| EMULATOR|| /CSF -> ABILITAZIONE EMULATOR RANGE F80000 - FFFFFF (XFE=1, FWE=0)| CSF = (A23 & A22 & A21 & A20 & A19' & VMA' & FWE' & XFE)