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Chase H.Q. R800 HIGH SPEED CPU + CHEAT MODE

by ARTRAG on 23-12-2022, 15:52
Score: 171.54 %, Type: Forum topic , Comments: 2 comments
The rom is in the description of the video https://youtu.be/lCY7AADfzjE Nice! Really smooth on a 7Mhz Nice! Really smooth on a 7Mhz Z80. Better play it on a Panasonic Better play it on a Panasonic MSX2+ at 5.37MHz: https://youtu.be/RNl1jlSguOI I have tried ...

Sony HitBit hexmonitor project... -> Firmware analysis

by asgalon on 30-04-2016, 16:39
Score: 116.84 %, Type: Forum topic , Comments: 0 comments
Hi! Since I never had any contact with Z80 or MSX computers before, I am now doing my normal routine to get into the machine by reverse engineering a larger program to learn assembler language and system architecture at the same time. To this purpose I have thought that it would be nice to have ...

Generating MegaROMs of arbitrary size with SDCC or other compilers?

by asiga on 21-03-2014, 15:26
Score: 98.65 %, Type: Forum topic , Comments: 10 comments
and other projects). The trick is that the compiler supports z80 systems with generic MMU where the user ...

State of the art in C programming for the MSX?

by asiga on 21-03-2014, 12:33
Score: 104.27 %, Type: Forum topic , Comments: 56 comments
compiler, so it won't generate Z80 code, but 8080, which works fine on the MSX but perhaps not as optimized as SDCC or z88dk, which generate full Z80 code. The good point is that its builtin C library seems ... course of assembly z80 at the moment, after that, going back to C. Crossdeveloping is what i think ...

MSX2 copy procudure from BIOS

by ASK on 14-02-2007, 10:24
Score: 91.57 %, Type: Forum topic , Comments: 10 comments
let's go: HMMC CPU -> VRAM copies a block of RAM in a BOX in VRAM, the z80 needs to pass ... direction, the z80 gives the command the VDP does the job HMMM VRAM -> VRAM copies a BOX in VRAM to the VRAM (almost no xy restrictions), the z80 gives the command the VDP does the job HMMV VDP -> VRAM ...

Scrolling text in 80 column text mode

by Aslak3 on 13-09-2016, 14:55
Score: 103.62 %, Type: Forum topic , Comments: 24 comments
world, use the z80 to perform the same thing. those old and beloved cpu can move about 900 bytes each ... column mode. our z80 run @3.57mhz with a m1 wait state. Do not be fooled by the apparently high clock. the z80 is designed to accept and require an high clock rate. Approx it's like a 6809 @2-.2.5 mhz. ...

Interrupts and gfx9000

by assembler on 28-07-2012, 11:26
Score: 98.47 %, Type: Forum topic , Comments: 43 comments
script in openMSX to show the exact reason why the Z80/R800 enters the IRQ routine. proc acceptIRQ {} ... set_bp z80.acceptIRQ 1 acceptIRQ Save this script to a file (e.g. irq.tcl ) and then execute ... the Z80/R800 enters the IRQ routine. @wouter: do you know what is the exact procedure when dealing ...

Ghost 'n Goblins for GFX9000 - First steps

by assembler on 02-02-2013, 01:26
Score: 107.8 %, Type: News post , Comments: 74 comments
with 16KB only (implies to store map data uncompressed) betatesting: test 2 complete cycles Z80 Z80 ...

Ghost and Goblins for TurboR and v9990

by assembler on 20-04-2017, 10:12
Score: 121.4 %, Type: Forum topic , Comments: 109 comments
the gameplay. In Z80 mode only 16KB of RAM is required so it can be run on virtually any MSX. The Panasonic MSX 2+ has a Turbo mode that sets the Z80 to 5.37Mhz. In those cases, that mode is activated ... is a TurboR but running in Z80 mode. Maybe I don't get it right, Maybe I don't get ...

I just bought a Philips NMS8245 and I have many questions.

by athansoft on 23-02-2011, 22:51
Score: 90.41 %, Type: Forum topic , Comments: 12 comments
shows the wires from Z80 and the other chips to ... the second picture What is it and how can I use. ... debug I recommend SUPER-X. Z80DIS (CP/M) is a good disassembler. If you are familiar with CP/M ...
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