HuC1 - Revision history

Nitro2k01 at 02:40, 5 April 2020

2020-04-05T02:40:28Z

Jrra at 05:20, 21 March 2016

2016-03-21T05:20:41Z

Jrra at 04:55, 22 September 2015

2015-09-22T04:55:31Z

Jrra: Created page with "{{Pandocs|memorybankcontrollers}} == HuC1 == HuC1 is an MBC used by some Game Boy games which besides doing the usual MBC stuff, also provides IR comms. A lot of sources on th..."

2015-09-22T04:55:09Z

Created page with "{{Pandocs|memorybankcontrollers}} == HuC1 == HuC1 is an MBC used by some Game Boy games which besides doing the usual MBC stuff, also provides IR comms. A lot of sources on th..."

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{{Pandocs|memorybankcontrollers}}
== HuC1 ==
HuC1 is an MBC used by some Game Boy games which besides doing the usual MBC stuff, also provides IR comms. A lot of sources on the internet said that HuC1 was "similar to MBC1", but they didn't provide any detail. I took a look, and it turns out that HuC1 differs from MBC1 quite a lot.

==Memory Map==
0000-1FFF IR select
2000-3FFF ROM bank select
4000-5FFF RAM bank select
6000-7FFF Nothing?
--
A000-BFFF Cart RAM or IR register

==0000-1FFF IR Select (Write Only)==
Most MBCs let you disable the cartridge RAM to prevent accidental writes. HuC1 doesn't do this, instead you use this register to switch the A000-BFFF region between "RAM mode" and "IR mode" (described below). Write 0x0E to switch to IR mode, and anything else to switch to RAM mode.
Nevertheless some HuC1 games attempt to write 0x0A and 0x00 to this region as if it would enable/disable cart RAM.

==2000-3FFF ROM Bank Number (Write Only)==
HuC1 can accept a bank number of at least 6 bits here.

==4000-5FFF RAM Bank Select (Write Only)==
HuC1 can accept a bank number of at least 2 bits here.

==6000-7FFF Nothing? (Write Only)==
Writes to this region seem to have no effect.
Even so, some games do write to this region, as if it had the same effect as on MBC1. You may safely ignore these writes.

==A000-BFFF Cart RAM or IR register (Read/Write)==
When in "IR mode" (wrote 0x0E to 0x0000), the IR register is visible here.
Write to this region to control the IR transmitter. 0x01 turns it on, 0x00 turns it off. Read from this region to see either 0xC1 (saw light) or 0xC0 (did not see light).
When in "RAM mode" (wrote something other than 0x0E to 0x000) this region behaves like normal cart RAM.

==External links==
*[http://trashfolder.org/blog/huc1.html Source on trashfolder.org]

← Older revision		Revision as of 02:40, 5 April 2020
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		+	{{Pandocs\|huc1}}
	== HuC1 ==		== HuC1 ==
	HuC1 is an MBC used by some Game Boy games which besides doing the usual MBC stuff, also provides IR comms. A lot of sources on the internet said that HuC1 was "similar to MBC1", but they didn't provide any detail. I took a look, and it turns out that HuC1 differs from MBC1 quite a lot.		HuC1 is an MBC used by some Game Boy games which besides doing the usual MBC stuff, also provides IR comms. A lot of sources on the internet said that HuC1 was "similar to MBC1", but they didn't provide any detail. I took a look, and it turns out that HuC1 differs from MBC1 quite a lot.

← Older revision		Revision as of 05:20, 21 March 2016
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	==External links==		==External links==
−	*[http://~~trashfolder~~.~~org~~/blog/huc1.html Source on ~~trashfolder~~.~~org~~]	+	*[http://jrra.zone/blog/huc1.html Source on jrra.zone]

← Older revision		Revision as of 04:55, 22 September 2015
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−	~~{{Pandocs\|memorybankcontrollers}}~~
	== HuC1 ==		== HuC1 ==
	HuC1 is an MBC used by some Game Boy games which besides doing the usual MBC stuff, also provides IR comms. A lot of sources on the internet said that HuC1 was "similar to MBC1", but they didn't provide any detail. I took a look, and it turns out that HuC1 differs from MBC1 quite a lot.		HuC1 is an MBC used by some Game Boy games which besides doing the usual MBC stuff, also provides IR comms. A lot of sources on the internet said that HuC1 was "similar to MBC1", but they didn't provide any detail. I took a look, and it turns out that HuC1 differs from MBC1 quite a lot.