Hello,
We are trying to create a rom reader for SNES and have some issues. We are using pinouts informations from here :
https://www.caitsith2.com/snes/flashcar ... nouts.html
On snes maskrom, what is the goal of /OE (pin 31) and /CS (pin 22) ?
Do you confirm that :
- /CS means address is ready for SNES ?
- /OE byte is ready for ROM ?
Do you know if value is ready when /CS has HIGH or LOW value ? We think it is ready when value is LOW
When we log informations, we see a lot of adress and values but nothing appear to the screen. Do you have any idea what could be the issue ?
Is it normal that address 80068 appears a lot of times ?
Here is a log we get after few seconds :
Adress and data value: 32238 - 107
Adress and data value: 65406 - 255
Adress and data value: 65422 - 255
Adress and data value: 32735 - 234
Adress and data value: 61299 - 48
Adress and data value: 31630 - 240
Adress and data value: 31695 - 5
Adress and data value: 22511 - 38
Adress and data value: 63487 - 35
Adress and data value: 28415 - 2
Adress and data value: 53246 - 0
Adress and data value: 65535 - 255
Adress and data value: 31707 - 116
Adress and data value: 64477 - 46
Adress and data value: 1856 - 169
Adress and data value: 17226 - 0
Adress and data value: 27353 - 252
Adress and data value: 65391 - 255
Adress and data value: 65386 - 255
Adress and data value: 30699 - 34
Adress and data value: 59982 - 4
Adress and data value: 28671 - 0
Adress and data value: 54987 - 0
Adress and data value: 17218 - 133
Adress and data value: 52062 - 255
Adress and data value: 30450 - 169
Adress and data value: 63340 - 35
Adress and data value: 36723 - 1
Adress and data value: 60379 - 0
Adress and data value: 60271 - 32
Adress and data value: 27483 - 52
Adress and data value: 61266 - 242
Adress and data value: 63307 - 0
Adress and data value: 63199 - 229
Adress and data value: 17226 - 0
Adress and data value: 27358 - 248
Adress and data value: 31476 - 116
Adress and data value: 60234 - 9
Adress and data value: 64367 - 0
Adress and data value: 27507 - 2
Adress and data value: 31739 - 128
Adress and data value: 31699 - 76
Adress and data value: 65151 - 255
Adress and data value: 46911 - 31
Adress and data value: 63227 - 34
Adress and data value: 27507 - 2
Adress and data value: 31575 - 255
Adress and data value: 60239 - 34
Adress and data value: 367 - 74
Adress and data value: 80068 - 22
Adress and data value: 96980 - 0
Adress and data value: 97429 - 0
Adress and data value: 96668 - 47
Adress and data value: 95231 - 2
Adress and data value: 97014 - 0
Adress and data value: 113364 - 176
Adress and data value: 96991 - 16
Adress and data value: 97525 - 76
Adress and data value: 71876 - 149
Adress and data value: 113369 - 5
Adress and data value: 80606 - 11
Adress and data value: 114421 - 240
Adress and data value: 81141 - 159
Adress and data value: 130972 - 255
Adress and data value: 97148 - 10
Adress and data value: 92822 - 68
Adress and data value: 113365 - 2
Adress and data value: 95660 - 48
Adress and data value: 112938 - 134
Adress and data value: 80757 - 166
Adress and data value: 97774 - 28
Adress and data value: 80068 - 22
Adress and data value: 129630 - 206
Adress and data value: 113391 - 73
Adress and data value: 130777 - 14
Adress and data value: 130801 - 165
Adress and data value: 80068 - 22
Adress and data value: 80064 - 76
Adress and data value: 92373 - 14
Adress and data value: 129774 - 128
Adress and data value: 80068 - 22
Adress and data value: 80068 - 22
Adress and data value: 122081 - 144
Adress and data value: 75972 - 201
Adress and data value: 81215 - 159
Adress and data value: 79876 - 240
Adress and data value: 89246 - 201
Adress and data value: 97229 - 194
Adress and data value: 80068 - 22
Adress and data value: 80068 - 22
Adress and data value: 121193 - 173
Adress and data value: 128409 - 224
Adress and data value: 80068 - 22
Adress and data value: 80068 - 22
Adress and data value: 97641 - 26
Adress and data value: 88937 - 107
Adress and data value: 97769 - 9
Adress and data value: 80068 - 22
Adress and data value: 95092 - 171
Adress and data value: 80068 - 22
Adress and data value: 88437 - 196
Adress and data value: 73142 - 176
Adress and data value: 120171 - 0
Adress and data value: 126420 - 201
Adress and data value: 113524 - 149
Adress and data value: 80064 - 76
Adress and data value: 122236 - 18
Adress and data value: 80068 - 22
Adress and data value: 97770 - 201
Adress and data value: 80068 - 22
Adress and data value: 71876 - 149
Adress and data value: 80281 - 185
Adress and data value: 130009 - 232
Adress and data value: 80068 - 22
Adress and data value: 80686 - 107
Adress and data value: 80068 - 22
Adress and data value: 96502 - 16
Adress and data value: 78453 - 0
Adress and data value: 103657 - 74
Adress and data value: 75908 - 34
Adress and data value: 118681 - 60
Adress and data value: 98206 - 169
Adress and data value: 78020 - 152
Adress and data value: 118734 - 56
Adress and data value: 71876 - 149
Adress and data value: 80068 - 22
Adress and data value: 114138 - 144
Adress and data value: 80068 - 22
Adress and data value: 110038 - 50
Adress and data value: 80068 - 22
Adress and data value: 80068 - 22
Adress and data value: 74511 - 169
Adress and data value: 75844 - 2
Adress and data value: 80064 - 76
Adress and data value: 110062 - 153
Adress and data value: 114073 - 133
Adress and data value: 130423 - 6
Adress and data value: 75972 - 201
Adress and data value: 119777 - 30
Adress and data value: 80068 - 22
Adress and data value: 113631 - 181
Adress and data value: 114026 - 25
Adress and data value: 81401 - 10
Adress and data value: 93561 - 34
Adress and data value: 113385 - 10
Adress and data value: 98024 - 34
Adress and data value: 80484 - 41
Adress and data value: 80068 - 22
Adress and data value: 109284 - 169
Adress and data value: 80068 - 22
Adress and data value: 80000 - 0
Adress and data value: 80068 - 22
Adress and data value: 88542 - 50
Adress and data value: 78020 - 152
Adress and data value: 78441 - 0
Adress and data value: 106390 - 208
Adress and data value: 96745 - 3
Adress and data value: 80068 - 22
Adress and data value: 89054 - 30
Adress and data value: 130462 - 28
Adress and data value: 80068 - 22
Adress and data value: 71876 - 149
Adress and data value: 118553 - 207
Adress and data value: 109927 - 54
Adress and data value: 88814 - 149
Adress and data value: 125289 - 194
Adress and data value: 89853 - 26
Adress and data value: 79940 - 26
Adress and data value: 80068 - 22
Adress and data value: 113001 - 0
Adress and data value: 129679 - 0
Adress and data value: 125289 - 194
Adress and data value: 88805 - 40
Adress and data value: 80281 - 185
Thanks for your help
We are trying to create a rom reader for SNES and have some issues. We are using pinouts informations from here :
https://www.caitsith2.com/snes/flashcar ... nouts.html
On snes maskrom, what is the goal of /OE (pin 31) and /CS (pin 22) ?
Do you confirm that :
- /CS means address is ready for SNES ?
- /OE byte is ready for ROM ?
Do you know if value is ready when /CS has HIGH or LOW value ? We think it is ready when value is LOW
When we log informations, we see a lot of adress and values but nothing appear to the screen. Do you have any idea what could be the issue ?
Is it normal that address 80068 appears a lot of times ?
Here is a log we get after few seconds :
Adress and data value: 32238 - 107
Adress and data value: 65406 - 255
Adress and data value: 65422 - 255
Adress and data value: 32735 - 234
Adress and data value: 61299 - 48
Adress and data value: 31630 - 240
Adress and data value: 31695 - 5
Adress and data value: 22511 - 38
Adress and data value: 63487 - 35
Adress and data value: 28415 - 2
Adress and data value: 53246 - 0
Adress and data value: 65535 - 255
Adress and data value: 31707 - 116
Adress and data value: 64477 - 46
Adress and data value: 1856 - 169
Adress and data value: 17226 - 0
Adress and data value: 27353 - 252
Adress and data value: 65391 - 255
Adress and data value: 65386 - 255
Adress and data value: 30699 - 34
Adress and data value: 59982 - 4
Adress and data value: 28671 - 0
Adress and data value: 54987 - 0
Adress and data value: 17218 - 133
Adress and data value: 52062 - 255
Adress and data value: 30450 - 169
Adress and data value: 63340 - 35
Adress and data value: 36723 - 1
Adress and data value: 60379 - 0
Adress and data value: 60271 - 32
Adress and data value: 27483 - 52
Adress and data value: 61266 - 242
Adress and data value: 63307 - 0
Adress and data value: 63199 - 229
Adress and data value: 17226 - 0
Adress and data value: 27358 - 248
Adress and data value: 31476 - 116
Adress and data value: 60234 - 9
Adress and data value: 64367 - 0
Adress and data value: 27507 - 2
Adress and data value: 31739 - 128
Adress and data value: 31699 - 76
Adress and data value: 65151 - 255
Adress and data value: 46911 - 31
Adress and data value: 63227 - 34
Adress and data value: 27507 - 2
Adress and data value: 31575 - 255
Adress and data value: 60239 - 34
Adress and data value: 367 - 74
Adress and data value: 80068 - 22
Adress and data value: 96980 - 0
Adress and data value: 97429 - 0
Adress and data value: 96668 - 47
Adress and data value: 95231 - 2
Adress and data value: 97014 - 0
Adress and data value: 113364 - 176
Adress and data value: 96991 - 16
Adress and data value: 97525 - 76
Adress and data value: 71876 - 149
Adress and data value: 113369 - 5
Adress and data value: 80606 - 11
Adress and data value: 114421 - 240
Adress and data value: 81141 - 159
Adress and data value: 130972 - 255
Adress and data value: 97148 - 10
Adress and data value: 92822 - 68
Adress and data value: 113365 - 2
Adress and data value: 95660 - 48
Adress and data value: 112938 - 134
Adress and data value: 80757 - 166
Adress and data value: 97774 - 28
Adress and data value: 80068 - 22
Adress and data value: 129630 - 206
Adress and data value: 113391 - 73
Adress and data value: 130777 - 14
Adress and data value: 130801 - 165
Adress and data value: 80068 - 22
Adress and data value: 80064 - 76
Adress and data value: 92373 - 14
Adress and data value: 129774 - 128
Adress and data value: 80068 - 22
Adress and data value: 80068 - 22
Adress and data value: 122081 - 144
Adress and data value: 75972 - 201
Adress and data value: 81215 - 159
Adress and data value: 79876 - 240
Adress and data value: 89246 - 201
Adress and data value: 97229 - 194
Adress and data value: 80068 - 22
Adress and data value: 80068 - 22
Adress and data value: 121193 - 173
Adress and data value: 128409 - 224
Adress and data value: 80068 - 22
Adress and data value: 80068 - 22
Adress and data value: 97641 - 26
Adress and data value: 88937 - 107
Adress and data value: 97769 - 9
Adress and data value: 80068 - 22
Adress and data value: 95092 - 171
Adress and data value: 80068 - 22
Adress and data value: 88437 - 196
Adress and data value: 73142 - 176
Adress and data value: 120171 - 0
Adress and data value: 126420 - 201
Adress and data value: 113524 - 149
Adress and data value: 80064 - 76
Adress and data value: 122236 - 18
Adress and data value: 80068 - 22
Adress and data value: 97770 - 201
Adress and data value: 80068 - 22
Adress and data value: 71876 - 149
Adress and data value: 80281 - 185
Adress and data value: 130009 - 232
Adress and data value: 80068 - 22
Adress and data value: 80686 - 107
Adress and data value: 80068 - 22
Adress and data value: 96502 - 16
Adress and data value: 78453 - 0
Adress and data value: 103657 - 74
Adress and data value: 75908 - 34
Adress and data value: 118681 - 60
Adress and data value: 98206 - 169
Adress and data value: 78020 - 152
Adress and data value: 118734 - 56
Adress and data value: 71876 - 149
Adress and data value: 80068 - 22
Adress and data value: 114138 - 144
Adress and data value: 80068 - 22
Adress and data value: 110038 - 50
Adress and data value: 80068 - 22
Adress and data value: 80068 - 22
Adress and data value: 74511 - 169
Adress and data value: 75844 - 2
Adress and data value: 80064 - 76
Adress and data value: 110062 - 153
Adress and data value: 114073 - 133
Adress and data value: 130423 - 6
Adress and data value: 75972 - 201
Adress and data value: 119777 - 30
Adress and data value: 80068 - 22
Adress and data value: 113631 - 181
Adress and data value: 114026 - 25
Adress and data value: 81401 - 10
Adress and data value: 93561 - 34
Adress and data value: 113385 - 10
Adress and data value: 98024 - 34
Adress and data value: 80484 - 41
Adress and data value: 80068 - 22
Adress and data value: 109284 - 169
Adress and data value: 80068 - 22
Adress and data value: 80000 - 0
Adress and data value: 80068 - 22
Adress and data value: 88542 - 50
Adress and data value: 78020 - 152
Adress and data value: 78441 - 0
Adress and data value: 106390 - 208
Adress and data value: 96745 - 3
Adress and data value: 80068 - 22
Adress and data value: 89054 - 30
Adress and data value: 130462 - 28
Adress and data value: 80068 - 22
Adress and data value: 71876 - 149
Adress and data value: 118553 - 207
Adress and data value: 109927 - 54
Adress and data value: 88814 - 149
Adress and data value: 125289 - 194
Adress and data value: 89853 - 26
Adress and data value: 79940 - 26
Adress and data value: 80068 - 22
Adress and data value: 113001 - 0
Adress and data value: 129679 - 0
Adress and data value: 125289 - 194
Adress and data value: 88805 - 40
Adress and data value: 80281 - 185
Thanks for your help