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공지사항

'전체'에 해당되는 글 401건

  1. 2018.09.10 PCPI Z80 Plus testing PCB ordered
  2. 2018.06.07 Z80 Applicard with VDP Option board
  3. 2018.05.24 Another PCPI Z80 card
  4. 2018.05.20 Z80 co-processor board for APPLE //c
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Dear friends,


Here is my second step for Appli-card Z80 with VDP Option board.


What is VDP Option board?

http://quick09.tistory.com/1375?category=552730



It starts to support the VDP Option board with 3.58Mhz Original speed.



Both of game are bigger than 32KB and it was hard to load on Z80 Turbo7 structure.

But, New board could support it without memory conflict problem.

Even Turbo speed support but the VDP chip can't run faster speed..


So, This project just remain turbo step control.

It would support some sort of clocks 3.58Mhz 7.16Mhz and 4Mhz, 8Mhz, 16Mhz...

I want the smooth step switching and VDP support even on high clock speed..


* Loading program is very similar the case of the Z80 Turbo7 card with VDP Option board..


Thank you very much;

Ian Kim

'◆ My Z80 Card' 카테고리의 다른 글

Z80 Applicard with VDP Option board  (0) 2018.06.07
Another PCPI Z80 card  (0) 2018.05.24
Z80 co-processor board for APPLE //c  (0) 2018.05.20
Another Z80 co-processor card for APPLE II  (0) 2018.05.15
Z80 board for APPLE //c  (0) 2018.05.02
APMSX(MSX) card external SLOT is working  (0) 2017.11.12
Posted by 이안김

Dear Friends,


Another Appli-card is building now.

I'm doing firmware job and hope to make it work soon.


This board is simple design and would work with VDP Option board.

Z80 would work 3.58Mhz and 7.16Mhz but will try Maximum speed of CPU.

Please keep watch it. 

Thank you very much... :)



'◆ My Z80 Card' 카테고리의 다른 글

Z80 Applicard with VDP Option board  (0) 2018.06.07
Another PCPI Z80 card  (0) 2018.05.24
Z80 co-processor board for APPLE //c  (0) 2018.05.20
Another Z80 co-processor card for APPLE II  (0) 2018.05.15
Z80 board for APPLE //c  (0) 2018.05.02
APMSX(MSX) card external SLOT is working  (0) 2017.11.12
Posted by 이안김

Dear Friends,


I'm working for Z80 board on APPLE //c.


After several things hardware bug fixed, It start to boot CP/M as under.




This board is plug on CPU socket on APPLE //c.

And working as the same as Z80 softcard.

Working stable now.


It need to change some parts to make properly.

The PCB needs change some points...


Anyway, I also will try it for APPLE //c+ and hope to make it run on //c+.

Please wait for another toy on APPLE //c.


Unfortunately, It can't exist with Mockingboard 4c.

I will consider if I could make combined one board (MB4c with Z80 board)


Some weeks later, you could see completed Z80 co-processor board for APPLE //c.


Thanks your watching;

Ian Kim

'◆ My Z80 Card' 카테고리의 다른 글

Z80 Applicard with VDP Option board  (0) 2018.06.07
Another PCPI Z80 card  (0) 2018.05.24
Z80 co-processor board for APPLE //c  (0) 2018.05.20
Another Z80 co-processor card for APPLE II  (0) 2018.05.15
Z80 board for APPLE //c  (0) 2018.05.02
APMSX(MSX) card external SLOT is working  (0) 2017.11.12
Posted by 이안김

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