Differenze

Queste sono le differenze tra la revisione selezionata e la versione attuale della pagina.

--- sanco8001 [2022/12/08 20:43] – [Motherboard] Connectors giomba
+++ sanco8001 [2023/02/23 22:43] – [I/O] Added some other peripheral deduced from the code giuliof
@@ Linea 30: / Linea 30: @@
 External connectors:
   * standard C13/C14 power connector
-  * 5pin DIN for keyboard
+  * 8pin DIN for keyboard
   * DB25 communication port (supposedly a serial port)
   * DB25 printer port (supposedly a standard parallel port)
-  * 8pin DIN PRNT port
+  * 5pin DIN PRNT port
 ===== Power supply =====
-  * black -> reference GND
+  * **Original** PSU
-  * red -> 12V
+    * black -> GND
-  * yellow -> 5V
+    * red -> 12V
-  * purple -> -12V
+    * yellow -> 5V
+    * purple -> -12V
-A common ATX PSU can be used to power the Sanco, just swap yellow and red wires.
+On the power connector on the motherboard there is a key between position 7 and 8, to avoid inserting the plug backwards.
+    * 1 -> GND
+    * 2 -> GND
+    * 3 -> 5V
+    * 4 -> 5V
+    * 5 -> -12V
+    * 6 -> +12 V
+    * 7 -> NC
+    * EMPTY
+    * 8 -> NC
+| {{ :ceda:psu-connector.jpeg?direct&200|}}\\ <html><div style="max-width: 200px;">A modern ATX PSU can be used to power the Sanco, just swap yellow and red wires, as shown in the picture.</div></html> |
 ===== Motherboard =====
@@ Linea 58: / Linea 71: @@
 ==== Connectors ====
-{{ :ceda:psu-connector.jpeg?direct&200|}}
-  * Power connector. In the picture, a common modern ATX PSU has been adapted to power the Sanco 8003 motherboard.
-    * 1 -> GND
-    * 2 -> GND
-    * 3 -> 5V
-    * 4 -> 5V
-    * 5 -> -12V
-    * 6 -> +12 V
-    * 7 -> NC
-    * EMPTY
-    * 8 -> NC
 {{ :ceda:incrt.png?direct&200|}}
-  * Display port connector (INCRT) pinout: {{ :ceda:incrt-pinout.pdf |PDF}}
+  * Display port connector (INCRT) pinout: {{ :ceda:incrt.pdf |PDF}}
     * 1 -> NC
     * 2 -> GND (black)
@@ Linea 92: / Linea 93: @@
 As we found on our working computer.
-| Location | Type | Name | Description | Default value |
+^ Location ^ Type ^ Name ^ Description ^ Default value ^
 | A12 | DIP switch |  |  | 0x8F (bit 12345678) |
 | B15 | jumper | KB SEL | | shorted on PCB |
@@ Linea 99: / Linea 100: @@
 ====== ROM ======
-| Name | Version | Type | Position | Size | MD5 hash | Binary |
+^ Name ^ Version ^ Type ^ Position ^ Size ^ MD5 hash ^ Binary ^
 | Software ROM | V1.01 | 2764 | H4-H5-H6 | 8kBytes | f33347faf867be9eea28d928c7341f0e | {{ :ceda:v1.01_rom.bin |.bin dump}} |
 | Character ROM | CGV7.2 | 2732 | H12-H13-H14 | 4kBytes | 0bf03ecb77e3c6d220a354fe2c95fccd | {{ :ceda:cgv7.2_rom.bin |.bin dump}} |
@@ Linea 106: / Linea 107: @@
 ====== Memory map ======
 ===== Memory space =====
-| base | size | description |
+^ base ^ size ^ description ^
 | 0x0000 | 0x2000 | Software ROM |
 | 0x2000 |  |  |
 | 0xC000 | 0x2000 | Software ROM |
+| 0xD000 | 0x800  | Video Frame Buffer |
+| 0xD800 |  |  |
 ===== I/O =====
-| address | size | device |
+^ address ^ size ^ device ^
 | 0x81 |   | Bank switching? |
+| 0x82 |   | |
 | 0x83 |   | |
 | 0xA0 | 2 | CRTC internal registers |
 | 0xB0 | 4 | SIO/2 Serial Peripheral |
-| 0xC0 |   | |
+| 0xC0 |   | FDC - floppy disk controller |
-| 0xD5 | 0 | Speaker |
+| 0xD6 |   |   |
-| 0xD6 |   | |
+| 0xDA | 1 (2) | Speaker |
+| 0xDC |   | |
+| 0xDE |   | |
 | 0xE0 | 4 | CTC Timer |
 ===== Software ROM =====
-[[https://github.com/GLGPrograms/ceda-rom-disassembly|ROM disassembly]]
+[[https://github.com/GLGPrograms/ceda-rom-disassembly|ROM disassembly]] (work in progress)
 ===== Character ROM =====