Differences

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--- boards:sbc:sbc_v2:sbc_v2-005 [2020/12/05 07:35]
b1ackmai1er [Software Support]
+++ boards:sbc:sbc_v2:sbc_v2-005 [2021/03/29 07:00] (current)
b1ackmai1er [SBC V2-005 MEGAFLASH]
@@ Line 3: / Line 3: @@
 The SBC V2 is a Zilog Z80 processor board. It's a 100x160mm board that is capable of functioning both as a standalone SBC or as attached to the ECB bus.
-The SBC V2-005 is currently under development. See [[:boards:sbc:sbc_v2:sbc_v2-005:development|here ]]for the current status.
+The main advantage of this version over previous versions is the support of 1Mb FLASH memory and improved software support for Flash access.
+The SBC V2-005 is transitioning from development to release. Development history and additional supporting information can be found [[:boards:sbc:sbc_v2:sbc_v2-005:development|here ]]
@@ Line 58: / Line 60: @@
 Kicad files can be found [[https://github.com/b1ackmai1er/SBC-V2-005|here]] but may not be the most recent.
-Gerbers for SBC V2-005c {{:boards:sbc:sbc_v2:sbc_v2-005:sbc_v2-005c-gerbers.zip|here.}}
+Gerbers for SBC V2-005c, which have been built and tested. {{:boards:sbc:sbc_v2:sbc_v2-005:sbc_v2-005c-gerbers.zip|here.}}
-Current revision is SBC V2-005f
+Current revision is SBC V2-005i
+Gerbers for SBC V2-005i, currently untested {{:boards:sbc:sbc_v2:sbc_v2-005:sbc_v2-005i-gerbers.zip|here.}}
+Version i boards are on order as at 27-Feb-2021.
@@ Line 69: / Line 75: @@
   * Removes support for 128Mb RAM
   * Adds switch for recovery mode.
+  * Software support for programming dual chips.
+  * Driver support for accessing ROM drive as a read and write filesystem.
+  * ROMWBW based Flash upgrader.
+  * Solder link for UART clock as CPU clock for minimalist system.
@@ Line 128: / Line 138: @@
 \\
-====== Flash Programming ======
-Will Sowerbutts has updated his FLASH4 program to support programming one or more flash devices.
-To assemble a 1024Kb ROMWBW rom, use the following as an example command line: ''buildrom SBC std 1024''
- The updated Flash4 can be found in Will Sowerbutts github repository [[https://github.com/willsowerbutts/flash4|https://github.com/willsowerbutts/flash4]]
@@ Line 240: / Line 240: @@
 Initial programming of the ROM requires the use of a programmer that supports Flash PLCC32 chips such as the MiniPro TL866II. Subsequent reprogramming can be done on the SBC V2 if you have enough secondary storage to hold the ROM image file. This is the preferred method as installing and removing the PLCC32 Flash chips is more difficult then the DIP32 style chips used previously.
-Download the latest release i.e.
+Download the latest release i.e. RomWBW-v3.0.1-Package.zip and extract the ROM image file \Binary\SBC_std.rom. This is a 512Kb image and should be programmed to a 39SF040 (preferably) or AT49F040 and installed in flash location #1
-RomWBW-v3.0.1-Package.zip and extract the ROM image file \Binary\SBC_std.rom. This is a 512Kb image and should be programmed to a 39SF040 (preferably) or AT49F040 and installed in flash location #1
 Installing a 1Mb ROM image requires downloading, installing, customizing and assembling the ROMWBW source. Documentation on this process is detailed in \Source\ReadMe.txt file.
-To assemble a 1024Kb ROMWBW rom, use the following as an example command line in the Source directory: ''buildrom SBC std 1024'' . The finished ROM image will be saved in the \Binary subdirectory. Before programming, split the file into 512Kb parts using a tool such as [[https://mh-nexus.de/en/hxd/|HxD.]]
+To assemble a 1024Kb ROMWBW rom, use the following as an example command line in the Source directory: ''build SBC std 1024'' . The finished ROM image will be saved in the \Binary subdirectory. Before programming, split the file into 512Kb parts using a tool such as [[https://mh-nexus.de/en/hxd/|HxD.]]
 ====== MegaFlash Boot ROM configuration ======
@@ Line 280: / Line 280: @@
 BATCOND      .SET    TRUE            ; REPORT LOW BATTERY ON BOOT
 </file>
+====== Flash Programming ======
+Will Sowerbutts has updated his FLASH4 program to support programming one or more flash chips. The updated Flash4 can be found in Will Sowerbutts github repository [[https://github.com/willsowerbutts/flash4|https://github.com/willsowerbutts/flash4]] and is also included in the current [[https://github.com/wwarthen/RomWBW/archive/dev.zip|development release]] of ROMWBW. As the RAM disk on the SBC V2 is smaller then 512Kb, the ROM image to be programmed must reside on an alternate storage device such an IDE flash card.
+An example command line to update ROMWBW would be ''b:flash write std512.rom /1'' or ''b:flash write cust1024.rom /2'' for a 512Kb or 1024Kb ROM respectively.
 ====== Acknowledgement ======
-The SBC V2-005 is based on the work of Andrew Lynch N8VEM and others in the Retrobrew Computers community. To see Andrew foundation work, see [[https://retrobrewcomputers.org/n8vem-pbwiki-archive/0/35860613/46935481/4200858/index.htm|here.]]
+The SBC V2-005 is based on the work of Andrew Lynch N8VEM and others in the Retrobrew Computers community. To see Andrew's foundation work, see [[https://retrobrewcomputers.org/n8vem-pbwiki-archive/0/35860613/46935481/4200858/index.htm|here.]]
 Thank you Andrew!