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Type: Posts; User: davide78

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  1. Replies
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    That makes sense. Supporting write operation is...

    That makes sense. Supporting write operation is intended for flashing a ROM, not for adding RAM, and I suppose you don't need to be a DMA target in this case.
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    The RTL8019AS gates the chip enable signal, not...

    The RTL8019AS gates the chip enable signal, not the memory write/memory read. With write disabled, chip enable is asserted when MEMR is asserted and the address on the bus is inside the ROM memory...
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    And I can confirm that ... IT WORKS! I installed...

    And I can confirm that ... IT WORKS! I installed a SRAM chip in the ROM socket, and by enabling the "Flash write operation" I got 64K of RAM at the configured address! The socket in my card is...
  4. You can download Turbo Pascal 3.02 from here:...

    You can download Turbo Pascal 3.02 from here: http://codecentral.embarcadero.com/Item/26016 It is free for personal use, but you have to register to download it.
    The file list includes the graphics...
  5. Your program includes a unit named GRAPHI, or...

    Your program includes a unit named GRAPHI, or GRAPHICS, with the graphics routines, but the compiler cannot find the file. Check if there is a file GRAPHi.* somewhere in the compiler disks and put it...
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    Is the mem listing from PC DOS 7 ? How do you...

    Is the mem listing from PC DOS 7 ? How do you manage to have only 27K for SYSTEM? In my case it takes more than 50K, even with a clean boot and by decreasing FILES and BUFFERS.
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    Back then, I was quite happy with DOS 5.0 on my...

    Back then, I was quite happy with DOS 5.0 on my Amstrad PC1640 over the original 3.20. dosshell, qbasic, deltree and edit where worth the upgrade. I used amstrad's custom mouse and keyb driver from...
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    You can try with The Last Byte Memory Manager:...

    You can try with The Last Byte Memory Manager: http://files.mpoli.fi/unpacked/software/dos/utils/misc/tlb_v252.zip/
    According to the docs, it is compatible with dos >= 3.1. By loading LASTBYTE.SYS...
  9. Indeed, the software fails the internal loopback...

    Indeed, the software fails the internal loopback test and fail the external loopback test. By my understanding of the explanation. this indicate that the UART behaves correctly, and that the fault...
  10. Thread: Hi There!

    by davide78
    Replies
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    221

    Hi There!

    Hi There!

    I'm Davide from Italy. Started my journey in the world of computing when I was 14 and my father bought an Amstrad PC1640, complete with an "high resolution" color monitor, two floppy...
  11. I used a Startech USB to Null Modem adapter....

    I used a Startech USB to Null Modem adapter. According to the manual, this is the pinout of the DB9 serial:

    Pin Signal
    1 DCD
    2 TxD
    3 RxD
    4 DTR
    5 GND
    6 DSR
    7 RTS
  12. Amstrad PC5086: troubleshooting serial port

    Hi there!
    I have some issues with the serial port of an Amstrad PC5086. When tested with a null-modem cable, the port receive data correctly, but cannot send data. A further test with some leds...
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