FLASH 23C1000 - Revision history

Bkw: /* Summary */

2021-05-10T19:31:40Z

Summary

← Older revision		Revision as of 19:31, 10 May 2021
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	</gallery>		</gallery>

	PCB: [https://oshpark.com/shared_projects/~~zrGoxDgZ~~ OSHPark] or [https://www.pcbway.com/project/shareproject/FlashROM_8300.html PCBWAY]		PCB: [https://oshpark.com/shared_projects/sD1Clmi9 OSHPark] or [https://www.pcbway.com/project/shareproject/FlashROM_8300.html PCBWAY]

	<!-- 28-pin version		<!-- 28-pin version

Bkw: /* ROM images */

2021-05-10T14:25:00Z

ROM images

← Older revision		Revision as of 14:25, 10 May 2021
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	:NEC PC-8300 system rom: [[File:831000-438.bin]]		:NEC PC-8300 system rom: [[File:831000-438.bin]]
	:NEC PC-8300 system rom, Y2K patched: [[File:831000-438-y2k.bin]] (See [[Model_T_Y2K]])		:NEC PC-8300 system rom, Y2K patched: [[File:831000-438-y2k.bin]] (See [[Model_T_Y2K]])
			<!--
	<!-- :NEC PC-8401 system rom: [[File:PC-8401_IC24.bin]] -->		:NEC PC-8401 system rom: [[File:PC-8401_IC24.bin]] -->

	:NEC PC-8500 system rom: [[File:PC-8500_IC9.bin]]		:NEC PC-8500 system rom: [[File:PC-8500_IC9.bin]]

Bkw: /* ROM images */

2021-05-10T14:22:29Z

ROM images

← Older revision		Revision as of 14:22, 10 May 2021
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	=ROM images=		=ROM images=
	:NEC PC-8300 system rom: [[File:831000-438.bin]]		:NEC PC-8300 system rom: [[File:831000-438.bin]]
	:NEC PC-8300 system rom, Y2K patched: [[File:831000-438-y2k.bin]]		:NEC PC-8300 system rom, Y2K patched: [[File:831000-438-y2k.bin]] (See [[Model_T_Y2K]])

	<!-- :NEC PC-8401 system rom: [[File:PC-8401_IC24.bin]] -->		<!-- :NEC PC-8401 system rom: [[File:PC-8401_IC24.bin]] -->

Bkw: /* Install */

2021-05-10T02:06:56Z

Install

← Older revision		Revision as of 02:06, 10 May 2021
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	Move the jumper to RUN		Move the jumper to RUN

	Put the board in the ~~ROM0~~ socket in the PC-8300, or IC24 in PC-8401, or IC9 in PC-8500.		Put the board in the 23C1000 socket, with pins 3-30 in the socket, and pins 1,2,31,32 hanging off the end of the socket.
			:ROM0 in PC-8300, IC24 in PC-8401, IC9 in PC-8500
	~~:leave pins 1, 2, 31, 32 outside the socket, pretend the white silskreen line is the pin-1 / pin-28 end of a dip-28 chip.~~
	:for PC-8401, cut pin 1 a little short so that it doesn't touch R65, or use the DIP-28 version of the board (see FLASH_23C1000_DIP28 from github.com/bkw777/aDIPters)		:for PC-8401, cut pin 1 a little short so that it doesn't touch R65, or use the DIP-28 version of the board (see FLASH_23C1000_DIP28 from github.com/bkw777/aDIPters)

	~~Press~~ Shift-CTRL-Reset to hard-reset the PC-8300 to force it to load the new rom, including re-reading the one-time power-on defaults. If the date says 2000, then you got it. If the date says 1983 or 2083, then you didn't do a full reset.		For PC-8300, press Shift-CTRL-Reset to hard-reset the PC-8300 to force it to load the new rom, including re-reading the one-time power-on defaults. If the date says 2000, then you got it. If the date says 1983 or 2083, then you didn't do a full reset (assuming the y2k-patched rom image).

	=References=		=References=

Bkw: /* Program */

2021-05-10T02:00:17Z

Program

← Older revision		Revision as of 02:00, 10 May 2021
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	To program the chip,		To program the chip,
	* Move the jumper to PRG		* Move the jumper to PRG
	* Put the board into a programmers' ZIF socket ~~as if the whole board were a DIP chip~~		* Put the board into a programmers' ZIF socket
	* Tell the programmer software that it is the PLCC version of whatever chip is soldered on the board

	minipro -p "SST39SF010A" -w 831000-438-y2k.bin		minipro -p "SST39SF010A" -w 831000-438-y2k.bin

Bkw at 01:58, 10 May 2021

2021-05-10T01:58:14Z

← Older revision		Revision as of 01:58, 10 May 2021
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	=Directions=		=Directions=

	==~~Building~~==		==Build==
	See [[FlexROM_100]] to see how to do the dip legs.<br>		See [[FlexROM_100]] to see how to do the dip legs.<br>
	Search youtube for "drag solder" to see how to solder the TSOP legs with an ordinary soldering iron.		Search youtube for "drag solder" to see how to solder the TSOP legs with an ordinary soldering iron.
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	You don't install R3 usually. It is for VPP on pin 1, to support EEPROM/EPROM devices that have a VPP pin. These are all old devices that aren't made any more, but you can still buy used and new-old-stock. Don't install R3 if you're using the SST39SF010A part in the BOM linked above, or any 29 or 39 series flash chip. But if you happen to already have a 28F010, 28SF010, 27SF010, 27C010 etc, you can use it instead of the 39SF010, and if so, you need to install R3. 47K the same as the others.		You don't install R3 usually. It is for VPP on pin 1, to support EEPROM/EPROM devices that have a VPP pin. These are all old devices that aren't made any more, but you can still buy used and new-old-stock. Don't install R3 if you're using the SST39SF010A part in the BOM linked above, or any 29 or 39 series flash chip. But if you happen to already have a 28F010, 28SF010, 27SF010, 27C010 etc, you can use it instead of the 39SF010, and if so, you need to install R3. 47K the same as the others.

	==~~Programming~~==		==Program==
	Requirements:		Requirements:
	* eprom programmer, such as TL-866		* eprom programmer, such as TL-866
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	Macronix MX27C1000 is standard jedec 27C010 pinout, not like NEC 27C1000		Macronix MX27C1000 is standard jedec 27C010 pinout, not like NEC 27C1000


	<!--		<!--
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	-->		-->

	Compatible flash/eeprom/eprom chips that can be used on this board ~~(PLCC or TSOP)~~		Compatible flash/eeprom/eprom chips that can be used on this board:

	Without R3 installed:		Without R3 installed:

Bkw at 01:56, 10 May 2021

2021-05-10T01:56:20Z

@@ Line 32: / Line 32: @@
 Source: https://github.com/bkw777/aDIPters
 =References=
@@ Line 121: / Line 166: @@
    minipro -y -p "27C010@DIP32" -r rom.bin

Bkw: /* ROM images */

2021-05-10T01:50:48Z

ROM images

← Older revision		Revision as of 01:50, 10 May 2021
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	:NEC PC-8300 system rom: [[File:831000-438.bin]]		:NEC PC-8300 system rom: [[File:831000-438.bin]]
	:NEC PC-8300 system rom, Y2K patched: [[File:831000-438-y2k.bin]]		:NEC PC-8300 system rom, Y2K patched: [[File:831000-438-y2k.bin]]

			<!-- :NEC PC-8401 system rom: [[File:PC-8401_IC24.bin]] -->

			:NEC PC-8500 system rom: [[File:PC-8500_IC9.bin]]

	=Directions=		=Directions=

Bkw: /* References */

2021-05-10T01:48:48Z

References

@@ Line 34: / Line 34: @@
 =References=
 :[[File:UPD23C1000A.pdf]]
 :[[File:MX23C1000.pdf]]
-Pinout comparison:<br>
+NEC PC-8300, PC-8401, and PC-8500  computers use a 23C1000 mask rom for the system rom.
 '''
@@ Line 64: / Line 73: @@
 '''
 <!--
@@ Line 70: / Line 86: @@
 -->
-Compatible flash/eeprom/eprom chips that can be used on this board (LCC or TSOP)
+Compatible flash/eeprom/eprom chips that can be used on this board (PLCC or TSOP)
 Without R3 installed:
@@ Line 86: / Line 102: @@
 Any speed and any temperature range is ok.
-Any TSOP32 or LCC32(7x9) package is ok.
+Any TSOP32 or PLCC32(7x9) package is ok.
 =ROM images=

Bkw: /* References */

2021-05-10T01:33:31Z

References

@@ Line 34: / Line 34: @@
 =References=
-Mask rom datasheet
+:[[File:UPD23C1000A.pdf]]
-:[[File:UPD23C1000A.pdf|thumb]]
+:[[File:MX23C1000.pdf]]
 Old reference about pin-compatible parts:
 :https://www.web8201.net/Files/LIBRARY_web8201/NECPC8300_System_ROM_EPROM_Replacement.html
 Compatible flash/eeprom/eprom chips that can be used on this board (LCC or TSOP)
@@ Line 49: / Line 79: @@
 :28C010
-With R3 installed (47K):
+With R3 installed (10k-47K):
 :28F010
 :27SF010