Goal

get a single chip database file containing a machine-readable description of every known fuse.

Roadmap

Study the chip database of prjbureau and derive which notation/schema can be reused ⇒ create the most complete database as possible using the selected notations and schemas
Define complimentary notation needed to complete the database

sporniket commented 2 weeks ago

On reading a little the yosys manual about technological mapping, and seeing an exemple that should work there : https://github.com/hoglet67/atf15xx_yosys

See how to generate a liberty file descriptor.

More about liberty file format :

sporniket commented 2 weeks ago

3 logic diagrams using fuse liste [SYN,AC0] : Registered (01), Complex (11), Simple(01)

fuse list in ascending order products: starts at 0, 8 rows of 32 fuses per macro cells = 256 fuses per macro cells = 2048 Interconnect switches UIM1~UIM2048

  MC1:0000~0255
  MC2:0256~0511
  MC3:0512~0767
  MC4:0768~1023
  MC5:1024~1279
  MC6:1280~1535
  MC7:1536~1791
  MC8:1792~2047

XOR fuse, one per MC

  MC1.XOR = 2048
  ...
  MC8.XOR = 2055

64 user electronic signature fuses, from MSB to LSB

  User[63]:2056
  ...
  User[0]:2119

AC1 fuse, one per MC

  MC1.AC1 = 2120
  ...
  MC8.AC1 = 2127

PTD (Product Term Disable) fuses, one per row of products (= 64 fuses)

  MC1.PTD1~MC1.PTD8:2128~2135
  MC2.PTD1~MC2.PTD8:2136~2143
  MC3.PTD1~MC3.PTD8:2144~2151
  MC4.PTD1~MC4.PTD8:2152~2159
  MC5.PTD1~MC5.PTD8:2160~2167
  MC6.PTD1~MC6.PTD8:2168~2175
  MC7.PTD1~MC7.PTD8:2176~2183
  MC8.PTD1~MC8.PTD8:2184~2191

Global fuses :

  SYN:2192
  AC0:2193

TOTAL : 2194 fuses = 16×137 + 2

sporniket commented 2 weeks ago

Sample JED file for a GAL16V8 source


Used Program:   GALasm 2.0
GAL-Assembler:  GALasm 2.0
Device:         GAL16V8

*F0
*G0
*QF2194
*L0000 11101111111111111111111111111111
*L0032 01111111111111111111111111111111
*L0256 11111111111111111111111111111111
*L0288 11110111111111111111111111111111
*L0320 11111111011111111111111111111111
*L0512 11111111111101110111111111111111
*L0544 11111111111111111111101111111111
*L2048 11100000
*L2056 0100010101111000011000010010111000110010000000000000000000000000
*L2120 11100000
*L2128 1111111111111111111111111111111111111111111111111111111111111111
*L2192 1
*L2193 1
*C25a8
*
7305

sporniket commented 2 weeks ago

draft overview of the json database :

{
  "GAL16V8_Registered":{
    "pins":{
      "DIP20":{
        # pad naming
        # special names : C1, E1 (from prjbureau) for Clock and Output Enable, respectively (registered mode)
        # Input pad names : I1~I10 (**NEW**) for input pins (I1 instead of C1, I10 instead of E1 in complex/simple mode)
        # I/O/Q names : M1~M8 (from prjbureau), Mx is tied to MCx
        "C1": 1, # pin 1 is Clock --> special pad C1 
        "I2": 2,
        #...
        "I9": 9,
        "E1": 11, # pin 11 is Output Enable --> special pad E1
        "M8": 12, # pin 12 to
        #...
        "M1": 19,
      },
      "PLCC20":{} 
    },
    "specials":{
      # (**NEW**) Using the special function name 'CLK' and 'OE' as named by the datasheet
      "CLK":"C1",
      "OE":"E1"
    },
    "blocks":{
      # There is only one block
      "A":{
        "macrocells":[
          "MC1",
          #...
          "MC8"
        ],
        "switches":[
          # provisionnal : each of the 64 rows of 32 fuses 0~2047 ?
          "UIM1",
          #...
          "UIM63"
        ],
        "pterm_points":{
          ### HERE ###
          # The 2048 fuses of the matrix ?
          "UIM1_1": 0, 
          "UIM1_2": 1,
          # ...
          "UIM1_30": 30, 
          "UIM1_31": 31,
          "UIM2_1": 32, 
          "UIM2_2": 33,
          # ...
          "UIM63_30": 2046, 
          "UIM63_31": 2047,
        },
      }
    },
    "macrocells":{
      "MC1":{
        "block": "A",
        "pad": "M1",
        "pterm_ranges":{
          "PT1":[0,32],
          "PT2":[32,64],
          # ...
          "PT8":[224,256]
        },
        "pterm_disables":{
          # (**NEW**) Map product term to product term disable fuse
          # 2128~2135
          # Provisionnal -- otherwise, each PTD is a configuration of the cell ??
          "PTD1":2128,
          #...
          "PTD8":2135,
        },
        "configuration":{ # AC1 fuse
          "fuses":[2120],
          "values":{
            "registered":0,
            "combinatorial":1
          }
        },
        "polarity":{ # XOR fuse
          "fuses":[2048],
          "values":{
            "active low":0,
            "active high":1
          }
        },
      },
      # ...
      "MC8":{}
    },
    "switches":{
      "UIM1": {
        "block": "A",
        "mux": {
          "fuses": [
            0, 
            # ...
            ,31
          ],
        },
      # ...
      "UIM63": {
        "block": "A",
        "mux": {
          "fuses": [
            2016, 
            # ...
            ,2047
          ],
        },
      },
    },
    "globals":{
      "mode":{ # AC1 fuse
        "fuses":[2192, 2193], # SYN, AC0
        "values":{
          "registered":2,
          #"complex":3,
          #"simple":1
        }
      },
    }
  },

  # ...
  "GAL16V8_Complex":{
    "globals":{
      "mode":{ # AC1 fuse
        "fuses":[2192, 2193], # SYN, AC0
        "values":{
          #"registered":2,
          "complex":3,
          #"simple":1
        }
      },
    }
  },
  "GAL16V8_Registered":{
    "globals":{
      "mode":{ # AC1 fuse
        "fuses":[2192, 2193], # SYN, AC0
        "values":{
          #"registered":2,
          #"complex":3,
          "simple":1
        }
      },
    }
  },
}

sporniket / ideas

Adapt prjbureau to GAL16V8/ATF16V8 #50

Goal

Roadmap