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io [2022/08/14 11:05] – [Power control] pulkomandyio [2022/11/11 15:33] (current) – [ROM and cartridge] pulkomandy
Line 5: Line 5:
 ====== Port A ====== ====== Port A ======
  
-===== V.Link SPI =====+The use of Port A changes a bit on various generations of machines 
 + 
 +===== V.Smile Motion ===== 
 + 
 +==== V.Link SPI ====
  
   * IOA0: SPI clock   * IOA0: SPI clock
Line 13: Line 17:
   * IOA4: Chip select   * IOA4: Chip select
  
-===== Console type =====+==== Console type ====
  
 ^ Console        ^ IOA14 ^ IOA15 ^ ^ Console        ^ IOA14 ^ IOA15 ^
Line 21: Line 25:
 | Cyber Pocket   | 1     | 1     | | Cyber Pocket   | 1     | 1     |
  
-===== Other =====+==== Other ====
  
   * IOA11: Only a pull down resitor?   * IOA11: Only a pull down resitor?
   * IOA12: Only a test point on the motherboard?   * IOA12: Only a test point on the motherboard?
-  ioa13: LCD backlight control on vsmile pocket+ 
 + 
 +===== V.Smile Pocket ===== 
 + 
 +  IOA0-IOA11: LCD STN interface 
 +  * IOA13: LCD backlight control 
 +  * IOA14: Read as 0 according to notes in V.Smile Motion schematics
  
 ====== Port B ====== ====== Port B ======
Line 35: Line 45:
   * IOB2: Set to 0 to enable internal ROM   * IOB2: Set to 0 to enable internal ROM
  
 +Note: these can be used with the "External Memory Control" register, in that case they are controlled by the CPU core automatically depending on the address being accessed.
 +
 +For example in external address mode 2 or 3 (4 ROMs mode):
 +
 +^Pin   ^Address range^
 +|IOB0  |100000-1FFFFF|
 +|IOB1  |200000-2FFFFF|
 +|IOB2  |300000-3FFFFF|
 +|ROMCSB|008000-0FFFFF|
 +
 +In external address mode 0: ROMCSB is the only one used for the whole range (note: ROMCSB is not wired to anything, so in this area no ROM will be enabled)
 +
 +In external mode 1 (2 ROMs mode):
 +
 +^Pin   ^Address range^
 +|IOB1  |200000-3FFFFF|
 +|ROMCSB|008000-1FFFFF|
 +
 +Additionally, the end of the address space can also receive RAM (in the cartridge), this is configured separately and different RAM sizes are possible.
 ===== Power control ===== ===== Power control =====
  
Line 47: Line 76:
 ===== Configuration ===== ===== Configuration =====
  
-^Language^IOC3^IOC2^IOC1^IOC0^ +^Language^IOC3^IOC2^IOC1^IOC0^Value
-|Italian | 0  |  | 1  |  | +|Chinese | 0  |  | 1  | 1  |  7  | 
-|Chinese | 0  |    | +|Polish? Portuguese?  | 1  | 0  |     | 
-|Polish  | 1  | 0  | 0  |  | +|Dutch   | 1  | 0  | 0  | 1  |  9  | 
-|Dutch   | 1  | 0  | 0  |  | +|Italian | 1  | 0  | 1  | 0  |   | 
-|German  | 1  | 0  | 1  | 1  | +|German  | 1  | 0  | 1  | 1   | 
-|Spanish | 1  | 1  | 0  | 0  | +|Spanish | 1  | 1  | 0  | 0   | 
-|French  | 1  | 1  | 0  | 1  | +|French  | 1  | 1  | 0  | 1   | 
-|UK English| 1| 1  | 1  | 0  | +|UK English| 1| 1  | 1  | 0   | 
-|US English| 1| 1  | 1  | 1  |+|US English| 1| 1  | 1  | 1  |  
 + 
 +Values under 7 are filtered out by the console BIOS in some cases and replaced by either UK or US english. 
 + 
 +:?: The FCC schematics for the V.Smile motion says Italian should be 2 (0010), is it a difference for the new console or a mistake in the schematics?
  
 IOC4: if 1: show logo animation at boot IOC4: if 1: show logo animation at boot
 +
 +IOC5: currently unknown, maybe LCD/TV detection? Unused in V.Smile motion schematics, test point in older consoles?
  
 ===== Power control ===== ===== Power control =====
  
   * IOC6: audio output enable   * IOC6: audio output enable
-  * IOC7: Power control+  * IOC7: Power control (on V.Smile motion: microphone power control and wireless controller control)
  
 ===== Controllers ===== ===== Controllers =====
io.1660467954.txt.gz · Last modified: 2022/08/14 11:05 by pulkomandy
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