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Reset signal duration

by Eugeny_Brychkov on 03-10-2020, 08:07
Score: 159.66 %, Type: Forum topic , Comments: 5 comments
There must be a legitimate source detailing specification of the system reset timing. I am sure I have seen it somewhere, but can not find it (searched in MSX tech data book and in the net). Please help. Thank you! Reset timing: page 35 of ...

How to intercept hardware error handling under DOS2 in BASIC calling F37D

by Eugeny_Brychkov on 01-08-2020, 22:00
Score: 158.05 %, Type: Forum topic , Comments: 1 comment
checking F6C6 allowing minimum of 0a0h bytes free for the remaining stack (took this value from the BASIC ...

SCC quality output problem in MG2 (and probably other software)

by Eugeny_Brychkov on 24-06-2020, 09:42
Score: 157.5 %, Type: Forum topic , Comments: 19 comments
< 9, the waveform gets stuck; When setting the on/off bit to 0, waveform goes 0. These ... is disabled) instead of immediately putting channel output wave value to 0. Test confirmed - wave goes to 0 when channel is disabled, and it is weird - I would logically expect that wave would be always 0 only ...

Default state of the GR8NET's built-in PSG

by Eugeny_Brychkov on 08-06-2020, 10:08
Score: 157.05 %, Type: Forum topic , Comments: 8 comments
By default, on power up, GR8NET's PSG is enabled at port A0 (standard MSX PSG port). I have ... for initialization at all (e.g. slot 1=game cartridge and slot 2=GR8NET) the PSG stays at port 0x10 not interfering ... time stereo GR8NET, at the power up, will still initialize its built-in PSG at port A0 mirroring ...

Question about Nextor features for DOS1 mode

by Eugeny_Brychkov on 05-05-2020, 14:52
Score: 156.17 %, Type: Forum topic , Comments: 1 comment
Is there anything added value by the Nextor kernel in this mode apart from the standard functionality of DOS1 kernel? Question was answered: Question was answered: there's no added functionality for DOS1 implementation in Nextor. It is ...

Boot MSX like a PC

by Eugeny_Brychkov on 23-04-2020, 00:25
Score: 156.12 %, Type: Forum topic , Comments: 3 comments
I perform _mapdrv("c:",1,5,0) then I can perform FILES on hard disk. Is there any way ... then performing _mapdrv("a:",1,5,0), and then _system -> machine boots off the hard disk into DOS2. ...

MSX-DOS2, SET PROMPT ON and FDD/diskette wear-out

by Eugeny_Brychkov on 17-04-2020, 11:34
Score: 155.89 %, Type: Forum topic , Comments: 2 comments
During development of driver for floppies I found out that when ENTER key is pressed in the empty MSX-DOS2 prompt, system accesses the floppy drive. This means it starts disk rotating -> every time you press ENTER key both drive and disk are being ...

Making proper external mapper for Turbo-R

by Eugeny_Brychkov on 20-03-2020, 10:54
Score: 155.37 %, Type: Forum topic , Comments: 5 comments
that they insert 1 or 2 wait states for VDP access; GR8NET is able to detect this (0, 1, 2 or bigger). ...

Idea of RAM expansion cartridge

by Eugeny_Brychkov on 02-03-2020, 11:28
Score: 155.13 %, Type: Forum topic , Comments: 25 comments
be Let's put it this way... Filling that amount of memory with 0 on standard MSX (using LDIR) would take ...

Dry farts, I am so sad...

by Eugeny_Brychkov on 25-02-2020, 16:25
Score: 154.87 %, Type: Forum topic , Comments: 10 comments
on the circuit diagrams. According to the table in Wikipedia article, -5 dBm corresponds to 316 uW (0 ... outputs 0.5-1.5 V (1Vpp), IC353-1 is having gain of 1, and output of the opamp is the same Vpp. How many dBm is on opamp output pin 7? P=U*I=1*(1/3300)=0.000303 W (303 uW). Ok, within the table's value ...
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