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Can you help getting more info about those carts?
Cart name
Notes for chip search:
  • Use "+" as delimeter for all fields (except "cart name", where space is used); if many values are entered, all of them must appear in the cartridge then; case is not sensitive
  • "Mapper" is the actual mapper used by this cartridge hardware (might not match the one at wiki.nesdev.com, as at the moment I was analyzing this cartridge, there was no mapper assigned to it, so I had to assign my own number for testing)
  • "Original mapper" is the mapper used by licensed version of this game (for multicarts, it refers to mapper of the inside games, so 0+2 means this cartridge can run NROM+UNROM games)
  • Order in which you put values doesn't matter (you can write 7400+74138+7400 or 7400+7400+74138 to search for a cartridge that contains at least two 7400 chips and one 74138
  • Some chips (like PAL16*8) appear in cartridges as 16V8 or 16L8, so be sure to check both posibilities
  • Same goes for memories - type 27F080 to search for 32 pin memories, 27512 for 28 pin with two chip enables or MASKROM_1M_DIP28 for 28 pin with one chip enable
  • Same goes for mappers - some examples: AX5904(MMC1), AX5202P(MMC3), PT8154BM (9112MMC3), AX5208C(VRC4), 23C3662(VRC2)
  • Good news is that you can use wildcards, so 74139+*MMC3* will search for any cartrige that has at least one 74139 and MMC3 chip in any version
Mapper#
Original mapper#
PCB marks
Tags
Chips
Highway Star [blob]
Typesingle
Mapper928
Original mapper1
PCB marks821007C 47-102
Tags:#highway star
Uploaded:2020-10-23 06:25:06

Elements:
NameValue
IC1MASKROM_1M_DIP28
IC26264
IC37400
IC474138
IC574174
IC67432
IC77474
C1-
C2-
CART1FAMICOM_CART

Chip signature:
MASKROM_1M_DIP28+6264+7400+74138+74174+7432+7474

PCB top:

PCB bottom:

Shell top:


Shell bottom:

Screenshoots:
No photo
Extra info:
http://forums.nesdev.com/viewtopic.php?f=28&t=20020&start=45#p256955

Your PCB contain those registers:
[code]
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 (need to be XOR-ed with 100)
	  
$8000 | $ffff
------+-------
 PPP  |   7
[/code]

[url=https://obrazki.elektroda.pl/8365865000_1601295227_org.jpg][img]https://obrazki.elektroda.pl/8365865000_1601295227_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/5169148400_1601295229_org.jpg][img]https://obrazki.elektroda.pl/5169148400_1601295229_thumb.jpg[/img][/url] [url=https://obrazki.elektroda.pl/7149996300_1601295231.png][img]https://obrazki.elektroda.pl/7149996300_1601295231_thumb.jpg[/img][/url] 



Highway Star 7402+138+174+373+74.nes - read using Kazzo:
for (int i = 0; i < 8; ++i) {
	cpuWrite(0x8001, (i ^ 4)<< 1);
	cpuRead(0x8000, 0xbfff);
}

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