Hello all!,
at last i got burn PCE Eprom,and i'm trying to connect the Eprom to the Hu card...,
but i have a problem :'(
some of the pins from Hu card no have the same name on the Eprom...or maybe are not on the Eprom and in reverse...
PCE:
Pin Name Description
1 /CD Card Detect
2 AUDIO_IN non utilisé
3 A18 Address 18
4 A16 Address 16
5 A15 Address 15
6 A12 Address 12
7 A7 Address 7
8 A6 Address 6
9 A5 Address 5
10 A4 Address 4
11 A3 Address 3
12 A2 Address 2
13 A1 Address 1
14 A0 Address 0
15 D0 Data 0
16 D1 Data 1
17 D2 Data 2
18 /GND Ground
19 D3 Data 3
20 D4 Data 4
21 D5 Data 5
22 D6 Data 6
23 D7 Data 7
24 /CE Chip Select
25 A10 Address 10
26 /OE Output Enable
27 A11 Address 11
28 A9 Address 9
29 A8 Address 8
30 A13 Address 13
31 A14 Address 14
32 A17 Address 17
33 A19/CE Address 19/Chip Enable
34 R/W Read/Write
35 /HSM High Speed Mode
36 /RESET Reset système
37 /IRQ2 Interrupt Request 2
38 VCC +5 VCC
this are te pins dont know how/where connect...:
1 /CD Card Detect
26 /OE Output Enable
33 A19/CE Address 19/Chip Enable
34 R/W Read/Write
35 /HSM High Speed Mode
36 /RESET Reset système
37 /IRQ2 Interrupt Request 2
Eprom m27c801 have two pins where not connect nothing:
"Gvpp" and "E"
¿¿¿Card Detect maybe to GND??? i'm not sure and i can't find any info :-\,
thanks in advance!,
Greetings
If you read the datasheet (http://www.datasheetcatalog.org/datasheet/stmicroelectronics/4377.pdf), /E is /CE (chip enable)
/GVpp is /OE (output enable)
Anything that doesn't match between the chip and system, ignore.
Except /CD - this pin should be connected to ground on the HuCard, so the system knows a card is inserted.
Whooooooooooooooooooooooooooooo!
thanks! :D
but adress 19 is at same time chip enable...,¿i need wire the signals to the 2 points on the eprom? adress 19 and chip enable?,
and the pin 24 chip select is needed?
thank you very much!
/CE only becomes A19 when the HuCard is so big the PCE needs access to extra large cards. Connect the chip's A19 pin to PCE pin 33 (/CE) and connect the chip's /CE to GND.
This way the chip is always enabled, and A19 will only be activated when necessary.
Not luck for now,
but with this explanations i think im really close,
for now just an orange screen... :o,
I get confused a bit between "24 /CEChip Select" and "33 A19/CE Address 19/Chip Enable",
thank you very much I really appreciate the help.
Connect A19 to A19, and /CE to /CE.
ITS ALIVE!!!! ITS ALIVE!!!!
works!,thank you very much!
i ve done correctly yesterday,but with eprom burn with BYTE SWAP...,
byte swap is not needed...,
now i know,thank you very much,
TATSUJIN awaits me :-*,
greetings!.
Weird thing!
Adventure island works great,but TATSUJIN works with deformations...,imposible to play...,
in first was think the eprom is corrup or some thing like this...,
but when i read this eprom the image is perfect working on emulator...,¿maybe a problem with BIG games?i need another config for use this kind of 1.024 kb roms?
adventure island is really little...256kb...,
thanks again from the Guy of the problems :-*.
Edit:
Shinobi dont work 385k
Xevious dont work 257k
W-ring works perfectly,is a 384k rom
why?
maybe some ROMS are not good for this or is needed remove some header?
Quote from: gillianx68000 on May 25, 2013, 11:58:24 PM
Weird thing!
Adventure island works great,but TATSUJIN works with deformations...,imposible to play...,
in first was think the eprom is corrup or some thing like this...,
but when i read this eprom the image is perfect working on emulator...,¿maybe a problem with BIG games?i need another config for use this kind of 1.024 kb roms?
adventure island is really little...256kb...,
thanks again from the Guy of the problems :-*.
Edit:
Shinobi dont work 385k
Xevious dont work 257k
W-ring works perfectly,is a 384k rom
why?
maybe some ROMS are not good for this or is needed remove some header?
Darius alpha on Supergrafx (http://www.youtube.com/watch?v=GzaOijoNYUs#ws)