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Retro DIY MSX goodness update
Score: 156.95 %,
Type: Forum topic , Comments: 3 comments
My DIY MSX(2+) is coming along quite nicely. Last missing item is audio and joystick ports, PCB for it is under development...
The cartridge in the back slot is a MSX GOUDA SCSI interface with Novasix Flash BIOS (never made it to production).
...
Z280 to Z80 adapter revisit
Score: 159.33 %,
Type: Forum topic , Comments: 85 comments
some text in screen 0 width 80.
Now I am playing again with a Z280, this time in combination with my ... of the z280 is seen with the Dhrystone 1.0.
really interesting what this CPU performs.
Quote:
While I'm going to have my own run, I found results from Stefan Nitschke, who ran dhrystone 1.0 ...
MEGASCSI partitioning?
Score: 156.92 %,
Type: Forum topic , Comments: 7 comments
((ENTER & Cursor UP or DOWN ENTER)
- N DRIVES How many drives ? (0-8)
- Fill 2 in
- S SETUP Are ...
Tokyo 2018, still some MSX
Score: 156.24 %,
Type: Forum topic , Comments: 11 comments
Just got back from a trip to Japan. Of course we went to see some (retro) stores in Tokyo to see what MSX stuff was still for sale. The BEEP shop was my favourite, in a basement full of old nice stuff with a few nice MSX items.
A few pics:
...
Carnivore2 PSG write only?
Score: 155.65 %,
Type: Forum topic , Comments: 8 comments
to run it as a mirror without conflict on IN instructions
but it is on 0x10 on the ports list
then how to detect such PSG
port 0x10? Who/what can use port 0x10? Who/what can use it then? There is no reference in the Carnivore2 docs about it
I read about port 0x10 on the I read about port 0 ...
gfx9k lib howto?
Score: 155.45 %,
Type: Forum topic , Comments: 7 comments
I tried using gfx9k lib (0.70) to (get a head) start programming my V9990. It needs ...
SjASM Z80 Assembler v0.39g1 - <a href="http://www.xl2s.tk" title="www.xl2s.tk">www.xl2s.tk</a>
Pass 1 complete (0 errors)
g9klib.inc line 8: Label not found: G9k.Reset
g9klib.inc line 8: Label ...
VDP wait examples?
Score: 155.14 %,
Type: Forum topic , Comments: 13 comments
It seems my DIY MSX2+ is in need of a hw VDP wait mechanism.
In screen 0 en 1 I see now letter appearing twice or the wrong ones. For graphical screens I have not (yet) seen any corruption issues. ... the BIOS was so tightly timed. Then again screen 0 is very timing sensitive on the V99x8, more so than ...
DIY MSX(2+) keyboard issues, help needed
Score: 157.62 %,
Type: Forum topic , Comments: 12 comments
the trouble keys belong to row 0.
As background:
a interrupt is generated to the microcontroller whenever there is a read to IO port 0a9h from the MSX. The microcontroller then reads the current selected keyboard column from the MSX 8255 portC (PC0-3) and returns a 8-bit value to the MSX via 8255 PortB ...
YM2149/PSG line level output?
Score: 155.02 %,
Type: Forum topic , Comments: 5 comments
Hi,
I am in the process of building a DIY MSX. Next on the list is adding the PSG for sound and joystick support.
Do a need additional amplification to get line level sound output? If so, any recommendations of op-amps to use? The system currently ...
MSX 50pin catridge slot connector
Score: 153.35 %,
Type: Forum topic , Comments: 5 comments
Does anyone know a source and or part numbers for MSX (compatible) 50 pin catridge slot connector to use on a PCB?
Thanks
Those worked for Those worked for me:
https://www.ebay.com/itm/5pc-Industrial-Card-Edge-Slot-Socke...
I ...
