Image Map Image Map
Page 5 of 6 FirstFirst 123456 LastLast
Results 41 to 50 of 55

Thread: Northstar Advantage advice please.

  1. #41
    Join Date
    Nov 2017
    Location
    UK, South East
    Posts
    321
    Blog Entries
    1

    Default

    Thanks Mike - looks a little cheaper than Mike Arcade who also seem to provide a programming service with the equivalent devices here:

    https://www.mikesarcade.com/cgi-bin/...sku=PROM82S129

  2. #42

    Default

    Even with the correct EPROM, you might want to increase the bypass capacitors on the power supplies, especially the 12V used for the video.
    It looks like there is enough AC leaking through to make you sea sick.
    Dwight

  3. #43
    Join Date
    Nov 2017
    Location
    UK, South East
    Posts
    321
    Blog Entries
    1

    Default

    I think you (and Dave) are right Dwight. I know from some other users with USA 110V Advantages in the UK, they run just fine on step down transformers without apparently changing the PROM's (already have a quote of $25 for a programmed version). So it seems that something might not be right with the supplies too.

    Quote Originally Posted by Dwight Elvey View Post
    Even with the correct EPROM, you might want to increase the bypass capacitors on the power supplies, especially the 12V used for the video.
    It looks like there is enough AC leaking through to make you sea sick.
    Dwight

  4. #44
    Join Date
    Nov 2017
    Location
    UK, South East
    Posts
    321
    Blog Entries
    1

    Default

    Can someone please sanity check this PROM .bin file for me against the spec contained in the N* Technical Manual please - table 4-12 on page 4-33.

    It should represent what I believe are the documented PROM codes for programming to the 256*4 device with the 50Hz codes.

    Thanks

    https://drive.google.com/file/d/108b...ew?usp=sharing
    Last edited by zippysticks; September 23rd, 2019 at 12:34 PM.

  5. #45
    Join Date
    Mar 2013
    Location
    Chaffee, MO
    Posts
    1,216

    Default

    Ian,
    I believe you have the file incorrect.

    Look at the left column, and it is noted as a Hexidecimal address. {00..32} HEX are 0x02
    You HEX Bytes od 0x02 end at address 0x19

    You need to continue the 0x02 thru Address 0x32


    Code:
    00000000   22 22 22 22  22 22 22 22  22 22 22 22  22 22 22 22  """"""""""""""""
    00000010   22 22 22 22  22 22 22 22  22 22 22 22  22 22 22 22  """"""""""""""""
    00000020   22 22 22 22  22 22 22 22  22 22 22 22  22 22 22 22  """"""""""""""""
    00000030   22 22 22 00  00 00 00 00  00 00 00 00  00 00 00 00  ""..............
    00000040   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
    00000050   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
    00000060   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
    00000070   00 00 00 00  00 00 00 00  AE EE EE EE  EE EE EE EE  ................
    Thanks.

    Larry
    Last edited by ldkraemer; September 23rd, 2019 at 03:03 PM.

  6. #46
    Join Date
    Mar 2013
    Location
    Chaffee, MO
    Posts
    1,216

    Default

    Ian,
    I was in a hurry to get to Granddaughter's Volleyball game, and I looked at the 60 HZ file. SORRY!
    Here is the corrected 50 HZ file. I'm sure it should be correct, but double check it......PLEASE!

    Code:
    dd if=/dev/zero bs=1 count=256 of=NStarAdvVid50PROM.BIN
    hexedit NStarAdvVid50PROM.BIN
    Code:
    00000000   02 02 02 02  02 02 02 02  02 02 02 02  02 02 02 02  ................
    00000010   02 02 02 02  02 02 02 02  02 02 02 02  02 02 02 02  ................
    00000020   02 02 02 02  02 02 02 02  02 02 00 00  00 00 00 00  ................
    00000030   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
    00000040   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
    00000050   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
    00000060   00 00 00 00  00 00 00 00  00 00 00 00  00 00 00 00  ................
    00000070   00 00 00 00  00 00 00 00  0A 0E 0E 0E  0E 0E 0E 0E  ................
    00000080   0A 0A 0A 0A  0A 0A 0A 0A  0A 0A 0A 0A  0A 0A 0A 0A  ................
    00000090   0A 0A 0A 0A  0A 0A 0A 0A  0A 0A 0A 0B  0F 0F 0F 0F  ................
    000000A0   0F 0F 0F 0F  0F 0F 0F 0F  0F 0F 0F 0F  0F 0F 0F 0F  ................
    000000B0   0F 0F 0F 0F  0F 0F 0F 0F  0F 0F 0F 0F  0F 0F 0F 0F  ................
    000000C0   0F 0F 0F 0F  0F 0F 0F 0F  0F 0F 0F 0F  0F 0F 0F 0F  ................
    000000D0   0F 0F 0F 0F  0F 0F 0F 0F  0F 0F 0F 0F  0F 0F 0F 0F  ................
    000000E0   0F 0F 0F 0F  0F 0F 0F 0F  0F 0F 0F 0F  0F 0F 0F 0F  ................
    000000F0   0F 0F 0F 0F  0F 0F 0F 0F  0F 0F 0F 0F  0F 0F 0F 0F  ................

    Thanks.

    Larry
    Last edited by ldkraemer; September 23rd, 2019 at 07:54 PM. Reason: typo

  7. #47
    Join Date
    Nov 2017
    Location
    UK, South East
    Posts
    321
    Blog Entries
    1

    Default

    Not sure that can be right Larry - the file size becomes 256 bytes rather than the 128 byte file I produced that I think I need for the 265*4 prom....?

  8. #48
    Join Date
    Mar 2013
    Location
    Chaffee, MO
    Posts
    1,216

    Default

    Yes, but the 63S141 Datasheet shows a 1K size of 4 Output bits each. And 256 * 4 is 1024 = 1K
    and with {A0..A7} that is 8 Pins for Address locations 2 ^ 8 = 256.

    Larry

  9. #49
    Join Date
    Nov 2017
    Location
    UK, South East
    Posts
    321
    Blog Entries
    1

    Default

    Ok sorry - then I misunderstood the device specs - I though it was to be programmed with the 256 nibbles (256*4) detailed in the manual equating to 128bytes.

    It does clearly say in the doc that the 4 bits are the output bit VD0-VD3 - I missed that point.
    Last edited by zippysticks; September 24th, 2019 at 12:14 PM.

  10. #50
    Join Date
    Mar 2013
    Location
    Chaffee, MO
    Posts
    1,216

    Default

    Ian,
    No Problem. I didn't even look at the correct file the first time I posted, and had several mistakes in the HEX BYTES.
    But, that was because I was trying be quick in posting so I could go to Granddughters Ball game. I should
    have taken more time to verify my information.

    Everyone makes a mistake now and then. Just so you get it corect the first time it's burned in the OTP.

    Thanks.

    Larry

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •