CDesp

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  • in reply to: Cant download The Valley #3880
    CDesp
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      Try again

      in reply to: NewBrain on FPGA running and alive. #3876
      CDesp
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        VFD on
        Run 1 elapsed 6.98
        Run 2 elapsed 7.06
        Run 3 elapsed 7.14
        Run 4 elapsed 7.2
        Run 5 elapsed 6.4 (after put 31 that clears the screen)
        So it depends of how many chars the screen is showing. That is the busrq/busack. if a line has a1 char then the video circuit enables the cpu after that char, it does not wait for the line to end.
        with put 31:run elapsed 6.38 every time no chars on screen
        with vfd off the same results so the only the chars on the screen affects the result.
        with list (so the listing is displayed) i get 7.3 secs

        in reply to: NewBrain on FPGA running and alive. #3873
        CDesp
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          Nice work.

          Newbrain uses busreq/busack to paint the screen so the real speed is a lot less than 4MHz.

          That is the reason if you play chess with the fast setting on it disables the screen to go full speed.

          So for some games like the crossing  the speed should be reduced otherwise it is almost unplayable.

          in reply to: NewBrain on FPGA running and alive. #3862
          CDesp
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            You can try the files that newbrain emulator creates when you select a directory, it should work.

            Run newbrain emulator with CPM, select a directory, then dont close the emulator, goto the disc directory and there should be a 800kb disk file that you can copy.

            in reply to: NewBrain on FPGA running and alive. #3858
            CDesp
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              Great implementation.

              Tape files with binary follow ups should automatically change to the next file after each file loads. Like Pacman.bas, it needs to load the pac.screen.bin and the pac.bytes.bin. So it should probably go to a seperate folder and somehow put the files in order, or use a container like .tap.

              There are also .bas files that are disk files (cp/m) like demo30.bas. this one loads(merge) other bas files depending on the menu you choose, so it needs the cp/m, either the small one or the full with the Expansion. In my fpga i use a new 8K rom on bank 4 that implements a new device 12,13,14,15 (like cp/m) that loads from the sdcard.

              Newbrain uses all devices the same way as streams so you can replace any device with another.

              If you need help with the cp/m let me know.

              in reply to: Loading / Saving #3845
              CDesp
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                Ok there is a new version that fixes all problems (i think).

                Please try and let me know.

                Redownload from the files section

                in reply to: Loading / Saving #3833
                CDesp
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                  Hi.

                  You can export text through printer.

                  Open#8,8

                  List#8

                  The output will go to the file printernew.txt

                  in reply to: Loading / Saving #3827
                  CDesp
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                    Hi,

                    you can try the attached patterns (just overwrite the contents of the folder). They are the same as the mame wave.

                    But be aware you cannot convert a non TAPE file to a wav file. The file you are converting should be a tape file not a disk one.

                    If you want to convert a disk file you can do it by loading it on the newbrain and then poke 19,1 and save it as tape. That will produce a tape file which then you can convert it to a wave file to be written to a real tape and then be read by a real newbrain.

                    Anyway if that doesn’t work i ll have to build me a cable and do some tests.

                    Attachments:
                    in reply to: Loading / Saving #3815
                    CDesp
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                      Ok i made a tool to do this. I have not tested it.

                      So here it is https://newbrainemu.eu/download/bin2wave/.

                       

                      in reply to: Loading / Saving #3806
                      CDesp
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                        Hi,

                        No not possible. I have a project in mind to do in the future that will take a .bas file and produce a .wav file.

                        The only way to transfer the file now is via serial rs232.

                        in reply to: Power Supply Dual Cap Replacement #3775
                        CDesp
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                          Thanks but i have several KEMET AV MKP R41 4700PF that as i said work just like the originals  if you pair them.

                          I think there are 2 capacitors on your package not three.

                          in reply to: Newbrain Storage Device #3724
                          CDesp
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                            in reply to: Newbrain Storage Device #3713
                            CDesp
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                              New board and soon to come 3d box. Check here

                              in reply to: Newbrain memory replacement #3709
                              CDesp
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                                1st try failed.

                                You can see details here

                                in reply to: Newbrain repair (COP420 replacement) #3704
                                CDesp
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                                  If you mean if i have done it then no i haven’t.

                                  But in my opinion this is the only way to do it.

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