TRS80 model I with Alpha SuperMem (or compatibles), or Selector
(256K+ recommended or a hard disk for swap) and
- expansion unit
+ expansion interface (26-1140/1/2), or equivalent.
Options:
Floppy Disk (somewhat basic support, no format tool yet)
- Serial Adapter
- Hard Disk (Tandy compatible)
- Lower Case Kit (Optional, either Tandy or the simple mods)
+ RS-232-C Interface(26-1145, or compatible)
+ Hard Disk (Tandy compatible 26-1132)
+ Lower Case Kit (either Tandy 26-1104 or the simple mods)
Percom Compatible Doubler
Holmes style speed up board (anything using port 254 bit 0)
Real Time Clock (supported for time locking, can't do dates as
Planned:
Orchestra 80 sound card
+ Tandy Model I Double Density Kit (26-1143)
TRS80 model III with Alpha SuperMem (or compatibles)
(256K+ recommended or a hard disk for swap)
Real Time Clock (supported for time locking, can't do dates as
is not Y2K capable, must be at 0xB0)
Micro Labs Graphyx
- Tandy Hi-Res Card
+ Tandy Hi-Res Card (26-1125)
Alpha Products Joystick
ChromaTRS (as jostick and a graphics device only - need a VDP
emulation in xtrs to do console support)
Extra keys (F1 and F2)
LNW80 Graphics Modes (once emulator support is done)
+ Upsupported:
+ LNW80 II
+ Low 16K in the base unit. This would be good to support
+ but becomes almost a different port as we could unbank
+ the OS. Alternatively it might be possible to use it for
+ buffers.
+
Note:
The LNW80 serial does not permit baud rate setting in software
-Under Investigation:
+ Video Genie & Video Genie I/II / Dick Smith System 80 MkI & MkII /
+ PMC-80/81 / TRZ-80 with EG3014/X-4010/X-4020 and suitable memory
+ expansion (see notes)
+
+ Options:
+ Floppy Disk (somewhat basic support, no format tool yet)
+ Lower case mod or built in lower case
+ X-4010 expansion interface
+ EG3014 / X-4020 expansion interface
+ EG3016 printer interface
+ EG3020 RS232 interface
+ EG3022 S100 adapter (but no specific card drivers)
+ Percom compatible double density kit
+ HRG1B Graphics Card
+ Tandy style RTC at 0xB0 (only usable for time locking)
+ Anything on the model I list that works with a Genie/System-80
+ to TRS80 expansion convertor (*)
+ In Progress:
+ Lowe Electronics LE18 graphics adapter
+
+ Planned:
+ Lowe Electronics FRED
+ Tandy compatible double density kit
+
+ Unsupported:
+ TRS80 mapped serial/printer port on Video Genie (BUG)
+ Genie IIs/III: These are CP/M capable systems with a different
+ memory model.
+ Any non memory S100 cards that don't match the TRS80/VG
+ devices (ie the X-4010 S100 printer card should work)
+
+ (*) Right now printer and serial ports don't because we assume the
+ different VideoGenie addressing for them...
- Video Genie I/II with banked memory (eg on the earlier expansion unit
- via S100 instead of the supplied 32K card)
- (In theory something like a BG 256S 256K RAM S100 card in the expansion
- unit jumpered for AMOS II 8x32K user banks, with the I/O port
- jumpered for 0x43 should just work as it'll behave the same way
- as the SuperMEM for things that matter)
+ Notes:
+ (In theory having no RAM but something like a BG 256S 256K RAM S100
+ card in an expansion unit jumpered for AMOS II 8x32K user banks,
+ with the I/O port jumpered for 0x43 should just work as it'll
+ behave the same way as the SuperMEM for things that matter)
+ Also I suspect an S100 hard disk controller could also be used
+ if a driver was added - providing it doesn't do DMA and it avoids the
+ high ports F8-FF.
-Not Supported:
+Generally Not Supported:
Lubomir Soft Banker - only provides 96K RAM (not enough
for this build)
Various 64K only CP/M adapters
+ (Unless someone knows one that stacks with the supermem!)
Would Be Nice:
80-Grafix - need docs, example apps to debug
binaries are not relocatable so you need to build a custom user
space for this platform.
-Requirements:
- TRS80 Model I or III (or emulator)
- Preferably the lower case mod
- Supermem or compatible expansion
- Floppy drive or Hard drive (strongly recommend the latter)
-
-Optional:
- Lower case modification
-
To Do:
- Other banked expansions
- Hires card
- Stringy floppy (Model 1 looks easy but needs ROM image)
Orchestra
- Graphics hooks (both hires and also describe 64x16 lo-res pixel blocks)
Look at RTS/CTS flow control
- Needs tty sleeping support
- Needs to deal with model 1 case where it's polled so we need
Fast block copy routines for uget/uput
Hint based pre-fetching uget
Consider moving the tty buffers into banked space (INDIRECT_QUEUE)
+ When we have > 512K or so RAM use the rest as a ramdisc
Memory Map:
0000-3FFF Various fixed model 1 functionality
Need to move buffers out of line using the external buffers code so we
can better balance memory
-Drivers:
- Display 64x16 Done
- Keyboard Done
- Hard drive Straight model 4 port
- Floppy Minimal at this point
- Floppy drivers do not yet deal with double sided disks or sd/dd
- media detection
- Hard disk reads block 0, and handle partitions of some form
- including finding where 'swap' lives (swap not tested)
-
Setting It Up (current xtrs: https://github.com/TimothyPMann/xtrs with patches)
make
Banking Models
Currently Supported:
- Alpha Technology Supermem upper 32K banking only.
+ Alpha Technology Supermem upper 32K banking.
-Not Yet Started:
"Selector" for Model 1. Port 31 allows memory reshuffling away from
the model 1 default. Either the upper or lower 32K is switchable but not
both at once. bits 4/5 control the selection between a further 4 32K banks.
public / FUZIX.git / commitdiff