Search help

Search results

  1. Fred 13

    … then return to the CPU's previous action. Now, with the Z80 CPU, like the SAM's, things are simplified a bit. Fancy … interrupt another, if you get my meaning. However, with a Z80 there is only one maskable interrupt line, and no … jobbies. Well, there are three different modes on the Z80, but with the design of the coupe, we might as well just …

    Dan Dooré - 03/05/2024 - 12:14

  2. Fred 44

    … to me and I'll see what I can do. I am not that good at Z80 as I only recently started learning but I …

    Dan Dooré - 11/10/2020 - 16:39

  3. Fred 67

    … had a whole 48K of memory, a built in tape deck. It was Z80 based, as all the best machines are and I fiddled … all the capabilities of the ASIC as a sub-set, have a Z80 built into it and allow us to put another processor …

    Dan Dooré - 11/12/2020 - 09:49

  4. Fred 77

    … will be 16 years old, and there's also the good old Zilog Z80 CPU, which all SAMs, ZX machines, and London telephone …

    Dan Dooré - 11/12/2020 - 16:28

  5. Fred 6

    … memory is all 8-bit! I only wish a faster vesion of Sam's Z80 could be produced, like on some of the new …

    Dan Dooré - 03/05/2024 - 12:59

  6. Fred 22

    … a fascinating read. It has an excellant feature on the Z80 (the SAM's processor) and Zilog's other, later …

    Dan Dooré - 09/07/2021 - 15:07

  7. Fred 27

    … let you to look into SAM memory, but it works just like Z80 - you may see only 65536 bytes. To work with …

    Dan Dooré - 03/05/2024 - 12:40

  8. Fred 55

    … C64 only had a 6502 at 1mhz so a 256K computer with a 6mhz Z80 should be capable of it. Using mode 2 for vectors and …

    Dan Dooré - 11/11/2020 - 16:01

  9. Fred 9

    … use and an extremely useful and detailed list of all the Z-80 registers, their uses and several other bits and bobs …

    Dan Dooré - 03/05/2024 - 12:26

  10. Fred 63

    … be an accelerator. What ever happened to the Z800 16bit Z80 chip that could run at 12mhz and which I …

    Dan Dooré - 11/12/2020 - 08:45