Changes between Version 8 and Version 9 of TeradriveHardwareNotes

Timestamp:

08/07/2024 02:39:44 AM (9 months ago)

Author:

Mike Pavone

Comment:

--

TeradriveHardwareNotes

@@ -136 +136 @@
 * (value >= $A0 && value < $100) || (value >= $FE0 && value < $FF8) -> jump to work RAM address FF0100
 
+A commented disassembly of this firmware is available here: https://github.com/mikepavone/teradrive_tmss_disassembly
+
+== Expansion Port Pinout
+
+B1 = pin on the front side of the system closest to the drive bays. A1 = pin on the backside also closest to the drive bays
+
+Note: this has not been thoroughly checked. Highly recommend you double-check any pin mappings before relying on this.
+
+{{{
+B1  VCC
+B2  SR2
+B3  VA0
+B4  VA11
+B5  VA7
+B6  VA12
+B7  VA6
+B8  VA13
+B9  VA5
+B10 VA14
+B11 VA4
+B12 VA15
+B13 VA3
+B14 VA16
+B15 VA2
+B16 VA17
+B17 VA1
+B18 GND
+B19 VD7
+B20 VD0
+B21 VD8
+B22 VD6
+B23 VD1
+B24 VD9
+B25 VD5
+B26 VD2
+B27 VD10
+B28 VD4
+B29 VD3
+B30 VD11
+B31 SL2
+B32 VCC
+
+A1  GND
+A2  !MRES
+A3  VA9
+A4  VA10
+A5  VA18
+A6  VA19
+A7  VA20
+A8  VA21
+A9  VA22
+A10 VA23
+A11 !ROM
+A12 !RAS2
+A13 !FDC
+A14 !FRES
+A15 !DISK
+A16 !FDWR
+A17 !CAS0
+A18 !CE0
+A19 !AS
+A20 VCLK
+A21 !DTACK
+A22 !CAS2
+A23 VD15
+A24 VD14
+A25 VD13
+A26 VD12
+A27 !ASEL
+A28 !LWR
+A29 !UWR
+A30 !TIME
+A31 !CART
+A32 GND
+}}}
 
 == IC List