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Apple II has a place called slot memory

 

There is a so-called Cn00 area and 2KB of C800-CFFF, which is an extended ROM space.
This is usually where useful service routines are entered.

This is an address allocated by hardware when a card is inserted.
For example, slot 1 is C100-C1FF, slot 2 is C200-C2FF...and so on up to slot 7 C700-C7FF. 

Additionally, the form area C800-CFFF is a shared space for cards.

APMSX opens the I/O area of ​​Z80 to share APPLE II's Cn00-CnFF.
And the space is 2KB of C800-CFFF, which is not used currently. 

When designing a card, I have a philosophy that it should be more fun.. 

I thought about how to use it carefully, and I came up with the idea of ​​using this as RAM.

APMSX has 512KB of built-in memory, and I plan to use it by allocating the B800-BFFF side from MSX,
and also use it as a slot memory card.
There won't be many cases where it will be used, but it will be fun to use as a small amount of memory space when adding functions to a completed program on an 8-bit computer. I will allocate 2KB to the C800-CFFF side, which is unlikely to conflict with any program address.
Once it activated, you can use C800-CFFF as general RAM. 

And it can be applied to Sound Program.. It would be great if it is a sound effect using Ay-3-8910 of APMSX.
You can add special sound effects to Apple's poor sound games.
This program is loaded in advance and relocated to the corresponding location (DOS cannot BLOAD to the corresponding memory location)
Then, if you patch the corresponding game and call it with the corresponding routine,
a game program with new sound reinforcement will be born.
Since there is also TMS9918, it would be better if you could draw something on the extra video screen.

If MSX works, you can use the corresponding area as a data transfer space for APPLE II<=>MSX.

Since it does not conflict with any other program memory area of ​​APPLE II,

I think it can be used to run existing programs at full capacity and call necessary routines.

I did extract data of a EEPROM which may contain counters of the printer.

I don't use this printer anymore but, someone may need it to recover the printer.

It works and imaging unit is almost new and trasfter unit left 19%. Fuser also left 19% roller and other are good conditioned data.

As followed the supplies Information,

It says C420 series but, Printer model is SLC422

Dear customer and friends,

APMSX is MSX card for APPLE II computer it was developed long years ago.

I made some tens of this card but stopped to make it Due to parts obtain was good.

But, some of friends requesting more this card and I'm preparing this again.

While preparing, I'm doing for CPLD and try to put more functions in it.

And restuls I could put more available memory on MSX and more detail control register bits.

It provides more 86KB memory and it allocated on 64KB SLOT2 and 16KB SLOT0 16KB SLOT1.

Internally structure optimized and I'm still considering to put more function for more fun.

So, please email me if you are interested in.

Thanks you very much.
Ian Kim

This is a demo disk for MSX computer.

It got updated with autoexec.bat and works without key-in so, just put it on your 2nd(D2:) on SD  DISKII Plus

and 1st (D1:) must be APMSX.HDV.

And boot and keyin below on APPLE II

]SD (return)

It works as below without 'demo' keyin for starting.

https://youtu.be/uuct5GG4-XA

Enjoy the good screen show.

Thanks

http://www.anerty.net/software/file/DriveSort/

This utility is a good one for sorting files on SD memory card.

Thanks.

MB4C+ revised and enhanced for..

Now user can select SLOT#4 or SLOT#5

It isn't needed but some of user suggested and applied.

If S/W is upper ; SLOT#4 

If S/W is down ; SLOT#5

'Reset' hides the mocking board

When the user pressed 'Reset' and tried to reboot, it stopped on $c400 cause there was ROM code missing cause MB4C occupied there and needed to power OFF/ON or '$C600G'

Now it automatically returns and no more brake stops.

It wasn't a bug, the music construct set requested user to press 'RESET' to stop playing music.. so I couldn't remove MB4c from the SLOT.

but, I gave it up... and now we don't have to bother the brake while restarting.

Internally patched for the Prince of Persia.

I got a report that he couldn't run The Prince of Persia

I didn't believe before to test it but, I tested it and found he is correct.

It has a very strange hang while loading and doesn't start...

it made me research some more and now I can make it work with it.

I will consider the software cause it looks like a kind of bug.

And I will modify the position of screw holes for IIc 4000 after that we could have only one version of MB4C+ for all of APPLE IIc(+) computers.

Thanks, friends and customers..

Have a good day

Ian Kim

Dear friend and customers,

I'm updating the PS2 keyboard adapter series.

APPLE][, APPLE //e, IIc  and IIc+

all keyboard adaptors would allow present(Original) Keyboard connection and will work together with the PS2 keyboard.

For this,  It needs to be designed a new PCB.

I will post it when It is ready.

Thanks a lot

https://www.facebook.com/1557592920/videos/771024690735918/

SD Smart Drive메뉴얼첨부

FDD1, AUX FDD2에대한 내용을 조금 보강한 한글 메뉴얼입니다.

감사합니다.

Dear customers and friends,

Your success and happiness lie in you. Resolve to keep happy, and your joy and you shall form an invincible host against difficulties. May the New Year 2024 bring you all the joy and success in life!

Thank you very much,

Ian Kim

Mr. Steph made it and sent STL file.

If you have a 3D printer, you can print it and can use it to hold speakers in APPLE //c

When I ready, I will provide those clips for buyers.

Mr. Steph, thank you very much.

Hello,

It contains a few Beatles songs.

Of course, it can be played on SD MIDI ][+ and Passport MIDI card.

Enjoy it

Dear friends and customers,

PS2 keyboard adaptor is good for APPLE II but, now a day the PS2 keyboard also not easy to find...

Anyway, there are still good PS2 compatible USB keyboard.

8310 BOSSTON

With a USB adaptor and then it works great all of my keyboard adaptors.

I think that some of the other  USB keyboards also may work on a PS2 adaptor.

but, the 8310 BOSSTON keyboard is cheap and black and white color one exists.

I tested it on //e,//c and ][+ PS2 keyboard adapter. 

Regard;

Ian Kim

Dear customers and friends,

There are a lot of cost issues that happened. for examples, CPLD chips price increased more than 4 times due to this price I stop to make A2 OverDrive cards and I'm not easy to make with well-priced cards. also 65C22 chips price is $10 now it was $3 before when I start developing it. other environment costs also increasing.

And I couldn't keep today's price and from April. the selling price will increase +10%.

Please buy/order before April, then you could have today's price.

Sorry for this.

Regards;

Ian kim

It isn't my code and I found it somewhere...

The code shows the basic Mockinboard control way and ISR(Interrupt service routine).

It isn't a music player just routine to use AY38910 with 6522 chip.

 

Find the Do, Mi, Sol and It is 60,64,67 

So add code as under..

Hi Friends and customers,

I would like to explain how to use SD MIDI ][+ on BASIC.

SD MIDI ][+ card with a sound module, it would make a MIDI sound card for APPLE II.

But, unfortunately, APPLE II has limited Software to play MIDI sound.

SD MIDI ][+ users could play *.MID songs with MIDI Player.

And I believe that someday people would like to play MIDI card for better sound on APPLE II.

I will explain how to use SD MIDI ][+ card on BASIC in this column.

Users can use it in a straightforward way on BASIC.

Play Note and Stop the Note and with proper delay, It could be a MIDI song player.

Let's start to play BASIC for MIDI sound.

Try this code to make Sound.

*You need to key in all BASIC code, it would make you understand it.

** SD MIDI ][+ need to SLOT#2.

10 AC = 49320 ;Slot #2. MIDI control port

20 AD = 49321 ;Slot #2, MIDI Data port

100 POKE AC,19: POKE AC,17 ;MC 6850 init

200 POKE AD,144: POKE AD,50: POKE AD,127 ; Send data

]RUN

Can you hear any sound?

If there is no sound, try to check if card SLOT #2 and Speaker are ON.

If you could hear sound.. it is the easiest way to use MIDI card on your APPLE II.

And Now, let's change the musical instrument to another.

Add this code.

110 POKE AD,192: POKE AD,127

And RUN it

]RUN

And now,

What do you hear?

Did you still think making MIDI sound is hard on APPLE II?

Now, you need to learn the Data that it sent..

The code of POKE AD,( )

You may need to find the MIDI specification.

And What I tested in the code..

NOTE ON

and

Program Change

Thanks

Dear friends and customers,

Please email me with this Coupon information then you can have a 7% discount on the eBay price.

Coupon: 'BUYSD'

Item list on eBay

https://www.ebay.com/sch/ksd09/m.html

Thanks

Ian Kim