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MCODE EPROM HARDWARE
08-27-2021, 05:34 PM (This post was last modified: 08-27-2021 05:40 PM by Sylvain Cote.)
Post: #4
RE: MCODE EPROM HARDWARE
(08-26-2021 08:47 PM)Neve Wrote:  
(08-26-2021 07:12 PM)Sylvain Cote Wrote:  For the 41CL, you just need to initialize a 41CL internal RAM page with 0x00 and then map that page to the 41 memory space (page 6 to 15).
Thanks, I’ll have to look into that…

Example with one 4K QROM (RAM 10 bits), ZenROM & YFNX:
Code:
MMUDIS          // disable MMU
MMUCLR          // clear MMU
"YFNX"          // 41CL Extreme ROM
PLUG1L          // plug it to page 8
"ZENR"          // ZenROM
PLUG1U          // plug it to page 9
MMUEN           // enable MMU
"830000-0000"   // 4K word RAM at 41CL internal page 0x830000
YMCLR           // write 0x00 from 0x830000 to 0x830FFF
"-830 A"        // map 4K RAM internal page 0x830 to 41OS page 10
PPLUG           // plug 4K RAM to page 10
... then you can use MCED from ZenROM to directly edit the 4K RAM page.

(08-26-2021 08:47 PM)Neve Wrote:  
(08-26-2021 07:12 PM)Sylvain Cote Wrote:  There are several PC nut assembler available that can generate 4K MCODE modules.
Names of those PC nut assemblers? Where can I find these?

Available on TOS
  • SDS II, by Hewlett-Packard, runs on MS-DOS
  • SDK41, by Warren Furlow, runs on MS-DOS
  • asmnut, by Christophe Gottheimer, run Linux & Win32+Cygwin
  • NutStudio, by Håkan Thörngren, run on Linux & macOS
  • ... you can probably find more if you search the Internet

(08-26-2021 08:47 PM)Neve Wrote:  
(08-26-2021 07:12 PM)Sylvain Cote Wrote:  Look at my HPCC 2020 presentation on Diego's modules, it should gives you some answers to your questions.
Watching it now. It’ll probably raise even more questions!

Anytime!
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Messages In This Thread
MCODE EPROM HARDWARE - Neve - 08-26-2021, 06:28 PM
RE: MCODE EPROM HARDWARE - Sylvain Cote - 08-26-2021, 07:12 PM
RE: MCODE EPROM HARDWARE - Neve - 08-26-2021, 08:47 PM
RE: MCODE EPROM HARDWARE - Sylvain Cote - 08-27-2021 05:34 PM
RE: MCODE EPROM HARDWARE - Neve - 08-28-2021, 12:20 AM
RE: MCODE EPROM HARDWARE - derekamos - 08-28-2021, 03:34 AM
RE: MCODE EPROM HARDWARE - Neve - 08-28-2021, 05:13 PM
RE: MCODE EPROM HARDWARE - mfleming - 08-28-2021, 09:17 PM
RE: MCODE EPROM HARDWARE - Neve - 08-28-2021, 09:39 PM
RE: MCODE EPROM HARDWARE - Sylvain Cote - 08-30-2021, 02:36 PM
RE: MCODE EPROM HARDWARE - Neve - 08-30-2021, 05:54 PM
RE: MCODE EPROM HARDWARE - derekamos - 08-29-2021, 01:28 AM
RE: MCODE EPROM HARDWARE - rprosperi - 08-29-2021, 02:04 AM
RE: MCODE EPROM HARDWARE - Neve - 08-29-2021, 11:59 AM
RE: MCODE EPROM HARDWARE - Neve - 08-29-2021, 12:02 PM
RE: MCODE EPROM HARDWARE - MeindertKuipers - 08-29-2021, 11:25 AM
RE: MCODE EPROM HARDWARE - Neve - 08-29-2021, 12:01 PM
RE: MCODE EPROM HARDWARE - Neve - 08-29-2021, 02:32 PM
RE: MCODE EPROM HARDWARE - rprosperi - 08-29-2021, 08:40 PM
RE: MCODE EPROM HARDWARE - Neve - 08-30-2021, 05:50 PM
RE: MCODE EPROM HARDWARE - derekamos - 08-30-2021, 01:16 AM
RE: MCODE EPROM HARDWARE - Neve - 08-30-2021, 05:52 PM



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