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  1. Screen Modes

    … Trivia The screen mode effects the execution time of Z80 instructions, for MODE 1 see this article from …

    Dan Dooré - 03/03/2022 - 22:53

  2. Fred 64

    … I had a machine with a groovy processor again -- the Z80, wahey! So I kitted myself out with LERM, and started … computer called a SAM Coupe, which would run using a faster Z80. I thought "this is the machine for me -- I can convert … I wrote a letter to Andy Ide, asking if I could write a Z80 Machine Code tutorial column for him... He said that …

    Dan Dooré - 11/12/2020 - 09:01

  3. Fred 47

    … Drissen, so it might be worth while learning good old Z80 after all. Full instruction file included. CHEATS is by … Note that the disassembler will only show "documented" Z80 instructions - if it comes across an instruction it … Like the disassembler, it can only deal with documented Z80 instructions, and if you try to single-step an …

    Dan Dooré - 11/11/2020 - 09:16

  4. Fred 29

    … is one clock tick of the crystal connected to the Z80 (in SAM's case about 6MHz). This is not the real speed … instruction is also a loop, but an internal one, inside the Z80. Now a routine without loops, costing more memory. … required for each instruction is listed in Programming The Z80 by Rodney Zaks, an ancient Z80 bible dated around …

    Dan Dooré - 02/18/2021 - 20:24

  5. Fred 20

    … machine code, simple hardware design and the history of the Z80 series of chips as well as other articles … I thoroughly enjoyed it and thought the background info on Z80 and Zilog etc was very interesting. This would go very …

    Dan Dooré - 03/05/2024 - 12:43

  6. Fred 1

    … 4XX. LERM HAVE ALSO RELEASED AN ASSEMBLER-MODELLED ON THE Z80 TOOLKIT,SAM ASSEMBLER IS £8.99.ALSO BY LERM IS SAMTAPE …

    ascii - 11/24/2020 - 09:50

  7. Fred 57

    … Speccy's keyboard. In K.E. are three builded-in monitors (Z80-list, Vast and Wlezley - good for wieving …

    Dan Dooré - 03/05/2024 - 12:44

  8. SAM Coupé

    … 128 colours and no attribute clash! Although it uses a Z80 processing chip (the same as that in the Speccy) it runs …

    ascii - 07/13/2024 - 16:31

  9. Fred 11

    … me at FRED I'm also wanting any books based on learning Z80 m/c, assembly language, PASCAL and MS-DOS. I'm not … To accompany the m/c series here we have a full Z80 disassembler sent in by Frode Tennebo (although I don't … says that it does things the hard way - it emulates a Z80 chip (even though the Coupe's got one in the first …

    Dan Dooré - 03/05/2024 - 13:01

  10. The Sad Snail Collection

    … a few difficulties in itself, but increased my knowledge of Z80 assembly (from nothing!) in order to get it to work. …

    Dan Dooré - 03/05/2024 - 12:37