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MPC-100 no sound
Score: 111.99 %,
Type: Forum topic , Comments: 7 comments
power line, a fried transistor in audio circuit, connector issue, or something like that.
I'd start with checking voltages - on the main board itself. Most likely suspect would be +12V in this case. ... back to a normal bootup prompt not mounting the mapper.. odd.. but then I've only just started ...
Bad video signal on MSX2 Philips VG-8235
Score: 90.19 %,
Type: Forum topic , Comments: 25 comments
Yes, definately start with that... the power supply is like the 'low hanging fruit' ... shadow that appears to be the MSX moving logo at the start. The floppy disk drive had loose ... tried the SCART connector with the same result.
The MSX shadow moving at the start makes me think ...
How do you make use of INTs?
Score: 84.27 %,
Type: Forum topic , Comments: 19 comments
long as your frame calculations don't go over the time of a frame, or you'll start missing ... of the service routine is
located. The CPU automatically obtains the starting address and performs a
CALL ...
[QUOTE About IM2 mode, from the Thomas Scherrer Z80 FAQ :
Mode 2: Is the most powerful ...
Accessing tables with Z80 ASM
Score: 84.17 %,
Type: Forum topic , Comments: 29 comments
but remember, that can only work in a 256 byte boundary and when crossing the boundary you come back to start ... concerns when I started learning the Z80, I was afraid of forgeting the 6502 way of things. Hope I can ... byte boundary and when crossing the boundary you come back to start (and get an extra cycle delay ...
Making a simple development cartridge
Score: 84.69 %,
Type: Forum topic , Comments: 16 comments
to do, and I want to start slow. Plus I really think that a full 64KB ROM as I described (top page mostly data) is pretty powerful.
EDIT: Ah... that page you posted says that Gradiente's Expert does ...
Have a look at the MSX Technical manuals and some design examples. Good starting points would ...
MSX1 pages and slots
Score: 137.84 %,
Type: Forum topic , Comments: 62 comments
bytes of a ROM identify the cart, and specify an start address. But How does that take part in placing ROM at page 0? If most 16 or 32KB ROMS start execution at $4010 (after the header) what is physically ... the RAM slot (always in page 3 by the time ROM execution starts?)? How would I know what slot is my ...
Software to dump cartridges needed.
Score: 109.26 %,
Type: Forum topic , Comments: 11 comments
with pause hardware button, start the msx-dos bootdisk, press pause button, insert the cart, and press again ... #4241,START,0,0,0,0,0,0
START:
LD HL,MOVERAM_START
LD DE,RAM
LD (#F39A),DE
LD BC,MOVEROM_END-MOVERAM_START
LDIR
JP INIT
MOVERAM_START:
PHASE #D000
;----------------------
RAM:
LD A,(#F7F8)
PUSH AF
LD ...
MSX Goodies...
Score: 116.85 %,
Type: Forum topic , Comments: 36 comments
I have sold a couple of cartridges and now im eager to start to sell the rest of my msx items. ... then get the rest later on hehe (if they are left! )
Right ive decided its time to start seriously selling the it Right ive decided its time to start seriously selling the items now, Im going to give ...
WD2793 HLD/HLT timing?
Score: 115.16 %,
Type: Forum topic , Comments: 13 comments
logic is that HLD active starts the disk motor and after a fixed-duration delay HLT is signalled. HLD ... seeking track 0
Well, after power on reset all the 17xx controllers defult to the maximum stepping ...
One additional: Clock Signal
Score: 145.67 %,
Type: Forum topic , Comments: 57 comments
and I'll fix it); and
that 'AB' is found either at the very start of the file, ... been started with something that can be;
my poor MegaROM detection is currently predicated ... interesting. How do you determine when one of the simulations is working fine? I guess is one of them starts ...
