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start working on boot code, move things around

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Amber
2024-11-21 10:40:59 -05:00
parent fc115752e6
commit dcc1bea405
15 changed files with 79 additions and 6 deletions
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docs/prototype-1-specs.md
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@@ -1,15 +1,15 @@
# 6309 Board Prototype #1 Specs
HD63C09 CPU @ 3MHz
HM62256BLP-7 SRAM
AT28C256-15 EEPROM
ST16C550 UART @ 1.8342MHz (XO due to lack of 22pf 1.8432MHz XTALs)
AS6C62256-55 SRAM (32KB)
SST39SF010A-70 FLASH (32KB Used)
PC16550 UART @ 1.8342MHz
## Memory Map
| Device | Location |
|--------|-----------|
| EEPROM | 8000-FFFF |
| FLASH | 8000-FFFF |
| UART | 7F00-7FFF |
| SRAM | 0000-7EFF |
@@ -17,6 +17,6 @@ ST16C550 UART @ 1.8342MHz (XO due to lack of 22pf 1.8432MHz XTALs)
| A15 | A14-A9 | A8 | Chip |
|-----|--------|----|--------|
| H | x | x | EEPROM |
| H | x | x | FLASH |
| L | x | L | SRAM |
| L | H | H | UART |