Help with Kaiser's Highway Star repro

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zxbdragon
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Re: Help with Kaiser's Highway Star repro

Post by zxbdragon » Sat Jun 06, 2020 6:28 pm

102 0.001uf

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Fisher
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Re: Help with Kaiser's Highway Star repro

Post by Fisher » Sat Jun 06, 2020 6:45 pm

Great!
Many thanks again!

Should I post the pictures?

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tiretrak
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Re: Help with Kaiser's Highway Star repro

Post by tiretrak » Sun Sep 27, 2020 11:31 am

Fisher wrote:
Sat Jun 06, 2020 6:45 pm
Should I post the pictures?
yes,please

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tiretrak
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Re: Help with Kaiser's Highway Star repro

Post by tiretrak » Sun Sep 27, 2020 11:39 am

zxbdragon wrote:
Sat Jun 06, 2020 4:34 pm
Yes, photos of PCB

I'm sorry. It took me a long time to find it.

Sent to your Yahoo email
send me too , please . thank you

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Fisher
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Re: Help with Kaiser's Highway Star repro

Post by Fisher » Sun Sep 27, 2020 3:18 pm

Well, since zxbdragon didn't say either yes or no and this is a hobby stuff that can help many people if properly RE'd, I'm sharing the relevant pictures.
Hope I'm not doing anything wrong.
All credits for these photos go to the zxbdragon, so, many thanks to him!
Attachments
hygway-star-nes-60-pinos-kaiser-D_NQ_NP_973204-MLB40291652462_122019-F.png
hygway-star-nes-60-pinos-kaiser-D_NQ_NP_810592-MLB40291673273_122019-F.png
hygway-star-nes-60-pinos-kaiser-D_NQ_NP_687978-MLB40291686115_122019-F.png

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tiretrak
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Re: Help with Kaiser's Highway Star repro

Post by tiretrak » Mon Sep 28, 2020 12:00 am

Fisher wrote:
Sun Sep 27, 2020 3:18 pm
Well, since zxbdragon didn't say either yes or no and this is a hobby stuff that can help many people if properly RE'd, I'm sharing the relevant pictures.
Hope I'm not doing anything wrong.
All credits for these photos go to the zxbdragon, so, many thanks to him!
do you have schematic ? and rom

lidnariq
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Re: Help with Kaiser's Highway Star repro

Post by lidnariq » Mon Sep 28, 2020 12:03 am

KS-201 is a custom ASIC. This PCB's schematic won't be reusable.

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tiretrak
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Re: Help with Kaiser's Highway Star repro

Post by tiretrak » Mon Sep 28, 2020 12:04 am

this is my Highway star
and IC on board is broken
Image
https://ibb.co/rcBWxh8
https://ibb.co/RPP0Dwg
https://ibb.co/8DWx5Q1

lidnariq
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Re: Help with Kaiser's Highway Star repro

Post by lidnariq » Mon Sep 28, 2020 12:25 am

Have you tested the 74xx parts and RAM that you've removed and made sure they worked by themselves? The only other thing on your PCB is the chip-on-board mask ROM (Assumption: "HM1M28" means "1 megabit ROM with 28 pins")

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tiretrak
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Re: Help with Kaiser's Highway Star repro

Post by tiretrak » Mon Sep 28, 2020 1:51 am

lidnariq wrote:
Mon Sep 28, 2020 12:25 am
Have you tested the 74xx parts and RAM that you've removed and made sure they worked by themselves? T
yes. i`m using tl866a for testing.it`s ok

krzysiobal
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Re: Help with Kaiser's Highway Star repro

Post by krzysiobal » Mon Sep 28, 2020 4:16 am

Fisher wrote:
Sun Sep 27, 2020 3:18 pm
Well, since zxbdragon didn't say either yes or no and this is a hobby stuff that can help many people if properly RE'd, I'm sharing the relevant pictures.
Hope I'm not doing anything wrong.
All credits for these photos go to the zxbdragon, so, many thanks to him!
Weird board. Input pins of KS201 seems to be connected in the same maner as in Castle Vania 1, except that:
*pin16=CPU/ROMSEL
*pin17= I have no idea, either CPU-A14 or CPU-/A14
Output pits of KS201 seems to be shifted by one bit, but I'm not sure. Its pin 21 is surely used for something, but no idea for what.
Image

Mirroring controlled by $8000-$ffff.0, as stated here by this overcomplicated circuit.
Image

No idea what was the role of two unpopulated DIP28 chips. I **think** that maybe they are intended to be used for two 27512 64kB EPROMS instead onf one DIP28 128k MASK ROM, but the first chip has 1=A15, 20=/CE, 22=/OE not conneted to anything,

And also the 7474 used in its forbidden configuration to act as a inverter.
Image

Image Image

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tiretrak
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Re: Help with Kaiser's Highway Star repro

Post by tiretrak » Mon Sep 28, 2020 5:14 am

krzysiobal wrote:
Mon Sep 28, 2020 4:16 am
Image
thanks for schematic.do you have working rom for this ?

this is another version (russian)
Attachments
Highway Star (Dendy со слоном).jpg
highway-star.jpg
Last edited by tiretrak on Wed Sep 30, 2020 2:14 pm, edited 2 times in total.

krzysiobal
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Re: Help with Kaiser's Highway Star repro

Post by krzysiobal » Mon Sep 28, 2020 5:15 am

Your PCB contain those registers:

Code: Select all

PRG: 128 kB ROM
CHR: 8 kB RAM
Mirroring: hardware controller

$8001, mask: f0001:
[.... ...m]
         +-- mirroring (0=V, 1=H)
		 
$9001, mask: $f001:
[.... PPP.]
      +++--- 16kB PRG bank at $8000
	  
$8000 | $ffff
------+-------
 PPP  |   7
Image Image Image


If it does not work, probably PRG ROM blob is broken, try to read it back in Kazzoo

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Fisher
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Re: Help with Kaiser's Highway Star repro

Post by Fisher » Mon Sep 28, 2020 7:41 am

tiretrak wrote:
Mon Sep 28, 2020 5:14 am

thanks for schematic.do you have working rom for this ?

this is another version (russian)
Sorry but we can't share ROMs directly here.
If you want to try to make the same repro I did, try to Google "cah4e3 fami dumping by name", without the quotes and be happy. :-)

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tiretrak
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Re: Help with Kaiser's Highway Star repro

Post by tiretrak » Mon Sep 28, 2020 8:08 am

Fisher wrote:
Mon Sep 28, 2020 7:41 am
Sorry but we can't share ROMs directly here.
If you want to try to make the same repro I did, try to Google "cah4e3 fami dumping by name", without the quotes and be happy. :-)
thank you. i already found it .
which maskrom IC use better for diy cartridge Highway star ?

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