Chase HQ in R800 mode

By Ivan

Ascended (9112)

Ivan's picture

11-03-2005, 10:20

Martos has released a disk adaption of Chase HQ that runs in R800 mode. The Speccy version is not the fastest version anymore!!!

To run it at 3,5 Mhz load the game under MSX-DOS.
To run the game at 28,6 Mhz load it under MSX-DOS2.

In my humble opinion the perfect speed would be 6 MHz (only possible with the Z80B of Panasonic MSX2+ machines). 3,5 MHz is a bit slow and 28,6 Mhz is too fast.

You can find this new adaption in the download area of HispaMSX. I don't know if Martos has uploaded the latest version (the previous one had problems to load next stages).

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By AuroraMSX

Paragon (1901)

AuroraMSX's picture

11-03-2005, 12:03

<from the Oh-no-not-again deparment>

28,6MHz? The R800 runs at 7,16MHz.

But... the R800 processes its instructions in less T-cycles than the Z80, making it approximately 4x faster, compared to a Z80 at the same clockspeed. So, one would need a Z80 @ 28MHz, to keep up with the R800 @ 7,16MHz.

[edit] Let's add the ob-smiley --> Smile [/edit]

By Sonic_aka_T

Enlighted (4130)

Sonic_aka_T's picture

11-03-2005, 14:49

<from the Oh-no-not-again deparment>

It's T-States or M-Cycles Tongue

[edit] Let's add the ob-smiley --> Smile [/edit]

By [D-Tail]

Ascended (8232)

[D-Tail]'s picture

11-03-2005, 15:08

Hereby I declare today, Friday March 11th, to be the Ultimate International Nitpicking Day. How about it? Tongue

By Ivan

Ascended (9112)

Ivan's picture

11-03-2005, 17:08

In my humble opinion the perfect speed would be 6 MHz (only possible with the Z80B of Panasonic MSX2+ machines)

According to Martos going to MSX-BASIC, executing OUT64,8: OUT65,0 and returning to DOS with _SYSTEM should do the trick.

By Ivan

Ascended (9112)

Ivan's picture

11-03-2005, 17:09

OUT64,8 : OUT65,0

By Ivan

Ascended (9112)

Ivan's picture

11-03-2005, 19:32

Just played the game in Z80B mode (6 MHz). Perfect!!!