Mapping of Memory about msx-cartridge HOT 8 OPEN

On Apr 21, 2022, at 4:19 AM, Alvaro Polo ***@***.***> wrote: Yes, totally right. We are using only 3-bits to indicate the 16KB offset in the ROM. That only covers a ROM address space of 128KB. By adding another bit we could handle 256KBs. However, let me insist that the 128KB design is incomplete. It was never tested in production. And not intended for use. — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.

On Thu, Apr 21, 2022 at 6:15 AM Vinci18 ***@***.***> wrote: Hello, I finally made this design work. I can put four programs up to 32 k each into a 128 k ROM. All I had to do is to change polarity around DIP switches. Everything works fine. I added 2 more DIP switches and now can use 512 k ROM to store and run 16 games. I need to update PCB but I do not have all of your libraries. I can share an updated schematics if you are interested. Sent from my iPad On Apr 21, 2022, at 4:19 AM, Alvaro Polo ***@***.***> wrote: Yes, totally right. We are using only 3-bits to indicate the 16KB offset in the ROM. That only covers a ROM address space of 128KB. By adding another bit we could handle 256KBs. However, let me insist that the 128KB design is incomplete. It was never tested in production. And not intended for use. — Reply to this email directly, view it on GitHub <#3 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AIJTZWI3FDVMXMG7JP22XXDVGEFRXANCNFSM5PE7EZXA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

Is there any 128k schematic working to share? Sorry, not yet. — Reply to this email directly, view it on GitHub <#3 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ATJ3I3L67UZZ5HLWIMSU7XDWDKBJFANCNFSM5PE7EZXA> . You are receiving this because you commented.Message ID: ***@***.***>