New SX-Mini plus

New SX-Mini plus

par hamlet on 12-07-2020, 12:21
Sujet: Hardware
Étiquettes: 8bits4ever, clone, FPGA, MSX2+, OCM, SD, sx-mini
Langues:

The SX-1 Mini+ is a cost reduced MSX FPGA compatible 100% with the MSX2+ standard. It features VGA/RGB output, stereo audio output, PS/2 keyboard input, 2 DB9 joystick ports, SD card slot and 2 cartridge slots. The unit has a small form factor, about 100x100 mm, and it comes in a 3D printed case.
Internally, the SX-1 Mini+ also features SCC+ sound, FM sound, 2 or 4 Mb RAM mapper, and turbo mode (5,37mhz/8,06mhz). The external cartridge caddy allows the use of any MSX compatible cartridges. Each slot can be also configured as internal MegaSCC+.
You can connect almost any PS/2 keyboard and MSX compatible joysticks (DB9). The unit also includes a SD slot that can be used as mass storage device through BASIC or MSXDOS command line.

TECH SPECS

  • Altera Cyclone EP1C12Q240C8N FPGA
  • 32Mb SRAM
  • 2x standard MSX Cartridge Slot Connectors
  • 1x microSD Card Slot
  • D-Sub 15 VGA/RGB video output w/scanlines generator.
  • 3.5mm jack stereo audio output. Switchable tape input
  • PS2 Keyboard port
  • 2 DB9 joystick port
  • Fully assembled in a 3D printed case
  • Mini USB connector for power supply

Attention! Requires at least 2 Amp power supply (not included). 3D printed cases might show imperfections

New "plus" version now includes two regular cartridge slots on-board, two joystick ports and various fixes. Units will be available for preorder really soon!

Relevant link:
8bits4ever info page

Media browser (2)

  • New SX-Mini plus
  • New SX-Mini plus

Commentaires (25)

Par KdL

Paragon (1375)

Portrait de KdL

12-07-2020, 12:43

I see with pleasure in the photo that the pull-up resistors are correctly sized at 1K. Great !! LOL!

Par tfh

Prophet (2706)

Portrait de tfh

12-07-2020, 12:51

Looks good and a very nice price Smile
What does the 3D printed enclosure look like? And what is the quality of the sound-output?

Par Haze

Expert (114)

Portrait de Haze

12-07-2020, 17:45

I was about to ask regarding the OCM-based fixes, but I see KdL already spotted them on the board. That is good news and makes it an even more attractive product! I wonder if the fixes have also been implemented in any of the new "regular" Zemmix Neo batches from 8bits4ever?

Par Gloriou

Master (194)

Portrait de Gloriou

12-07-2020, 19:35

Very nice size specs and & price
Aaaaaaand out of stock.....

Par 8bits4ever

Resident (46)

Portrait de 8bits4ever

13-07-2020, 00:57

KdL wrote:

I see with pleasure in the photo that the pull-up resistors are correctly sized at 1K. Great !! LOL!

Yes, we have included the fixes you published on twiter (1K Pull ups on WAIT and INT)

tfh wrote:

Looks good and a very nice price Smile
What does the 3D printed enclosure look like? And what is the quality of the sound-output?

We are working on the case right now. Pictures will follow. Sound output should be the same as in the Zemmix or the regular SX-1 ITX.

Haze wrote:

I was about to ask regarding the OCM-based fixes, but I see KdL already spotted them on the board. That is good news and makes it an even more attractive product! I wonder if the fixes have also been implemented in any of the new "regular" Zemmix Neo batches from 8bits4ever?

We perform the fix mods on the Zemmix only by request. We cannot modify the PCB itself because we do not have the sources to do so. The new SX-1 Mini+ has the latest fixes by KdL

Gloriou wrote:

Very nice size specs and & price
Aaaaaaand out of stock.....

It has never been in stock. There will be units for preorder soon (within the next 7-10 days)

Par SkalTura

Champion (273)

Portrait de SkalTura

13-07-2020, 15:55

Awesome !!
I want one...

Is it possible to show the "normal" MSX2+ startup logo instead of the SX1 logo ?

Par 8bits4ever

Resident (46)

Portrait de 8bits4ever

13-07-2020, 16:11

SkalTura wrote:

Awesome !!
I want one...

Is it possible to show the "normal" MSX2+ startup logo instead of the SX1 logo ?

It is possible if you load the BIOS from the SD

Par Briqunullus

Champion (294)

Portrait de Briqunullus

13-07-2020, 17:55

Nice. Are there any functional differences between the regular SX-1 and the SX-1 mini+?

Par 8bits4ever

Resident (46)

Portrait de 8bits4ever

14-07-2020, 01:39

Briqunullus wrote:

Nice. Are there any functional differences between the regular SX-1 and the SX-1 mini+?

The mini+ only misses the scanlines generator and the composite video jack (you can get composite from an internal header if you really need it).

Par SkalTura

Champion (273)

Portrait de SkalTura

14-07-2020, 07:19

8bits4ever wrote:

It is possible if you load the BIOS from the SD

Cool, thank you.
Can't wait to order one ;-)

Par SjaaQ

Master (170)

Portrait de SjaaQ

15-07-2020, 13:32

Will it be possible to switch between 3.58 and 8,06mhz while the machine is running? Like you can on a 7.14MHz machine?

Edit: NM:
F12: Changes CPU speed between
3.58MHz, 5.37MHz and 8.06MHz

Par Haze

Expert (114)

Portrait de Haze

16-07-2020, 19:35

Pre-orders are up!

Par 8bits4ever

Resident (46)

Portrait de 8bits4ever

17-07-2020, 16:26

SjaaQ wrote:

Will it be possible to switch between 3.58 and 8,06mhz while the machine is running? Like you can on a 7.14MHz machine?

Edit: NM:
F12: Changes CPU speed between
3.58MHz, 5.37MHz and 8.06MHz

Yes, you can switch frequency on the fly.

Haze wrote:

Pre-orders are up!

There are only 5 units left from this first (20 units) batch!

Par syn

Paragon (2018)

Portrait de syn

18-07-2020, 10:41

sold out already?

Par SkalTura

Champion (273)

Portrait de SkalTura

18-07-2020, 11:21

So exited to see my name already on the waiting list...
Feels like Christmas morning, seeing the presents under the tree Wink

Par GhaleonUnlimited

Supporter (3)

Portrait de GhaleonUnlimited

28-07-2020, 19:45

Damn -- do you have any idea when another batch will be available to order/pre-order? Thx!

Par bsittler

Expert (79)

Portrait de bsittler

08-09-2020, 01:27

Mine arrived today, this is a nice little MSX! I think it's replacing the 8bits4ever Zemmix Neo as my usual MSX now due to the convenient size and good compatibility Smile

Par SjaaQ

Master (170)

Portrait de SjaaQ

08-09-2020, 10:31

Congrats. Looks like you have a rare item in MSX world. I still have to wait as I am nr 12 on the list Sad

Par Haze

Expert (114)

Portrait de Haze

13-09-2020, 23:25

GhaleonUnlimited wrote:

Damn -- do you have any idea when another batch will be available to order/pre-order? Thx!

Looks like pre-orders for the next batch are live!

Par OeiOeiVogeltje

Paragon (1389)

Portrait de OeiOeiVogeltje

16-09-2020, 22:53

aaaand out of stock already

Par SkalTura

Champion (273)

Portrait de SkalTura

06-10-2020, 13:14

UPS delivered my SX-1 Mini+ today...
Only one word applies here: Awesome !!

8bits4ever wrote:

It is possible if you load the BIOS from the SD

But... Zero experience with FPGA MSX... How do I load my own MSX2+ Rom during boot ?
Is there a description about the features of the PFGA MSX ?

Par bsittler

Expert (79)

Portrait de bsittler

07-10-2020, 23:11

You can use mglocm in autoexec.bat to load a (mega)ROM image from the microSD card and start it, maybe this works for your purposes? Not entirely clear what you are hoping to do, though - if this is instead a desire to use a different main/disk/kanji/FM ROM set there is a toolchain from kdl (OCM-SDBIOS) that allows this to be loaded from microSD with a special filename provided it's the very first entry in the directory

Par SkalTura

Champion (273)

Portrait de SkalTura

08-10-2020, 09:46

I would like to see the normal MSX2+ boot logo instead of the SX-1 logo...

Par Meits

Scribe (6214)

Portrait de Meits

08-10-2020, 10:42

Can't that just be done with the available KDL firmware?

Par bsittler

Expert (79)

Portrait de bsittler

08-10-2020, 16:59

You can do that either by flashing different firmware or by using OCM-SDBIOS